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38758312909 = 345191122811
BaseRepresentation
bin100100000110001011…
…001110101111001101
310201001010121022000201
4210012023032233031
51113334112003114
625445541053501
72541316136551
oct440613165715
9121033538021
1038758312909
111548a06a168
1276180b7291
133868a53684
141c39709861
15101c9b4874
hex9062cebcd

38758312909 has 4 divisors (see below), whose sum is σ = 38759470240. Its totient is φ = 38757155580.

The previous prime is 38758312907. The next prime is 38758312951. The reversal of 38758312909 is 90921385783.

38758312909 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38758312909 - 21 = 38758312907 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38758312909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38758312907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526887 + ... + 595924.

It is an arithmetic number, because the mean of its divisors is an integer number (9689867560).

Almost surely, 238758312909 is an apocalyptic number.

It is an amenable number.

38758312909 is a deficient number, since it is larger than the sum of its proper divisors (1157331).

38758312909 is a wasteful number, since it uses less digits than its factorization.

38758312909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157330.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The spelling of 38758312909 in words is "thirty-eight billion, seven hundred fifty-eight million, three hundred twelve thousand, nine hundred nine".

Divisors: 1 34519 1122811 38758312909