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3871874497 = 15724661621
BaseRepresentation
bin1110011011001000…
…0001110111000001
3100222211121121022011
43212302001313001
530412144440442
61440111412521
7164643250561
oct34662016701
910884547264
103871874497
111707632687
12900824141
134992111ca
1428a320da1
15179db7117
hexe6c81dc1

3871874497 has 4 divisors (see below), whose sum is σ = 3896536276. Its totient is φ = 3847212720.

The previous prime is 3871874431. The next prime is 3871874519. The reversal of 3871874497 is 7944781783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1700407696 + 2171466801 = 41236^2 + 46599^2 .

It is a cyclic number.

It is not a de Polignac number, because 3871874497 - 219 = 3871350209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3871874417) 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, 12330654 + ... + 12330967.

It is an arithmetic number, because the mean of its divisors is an integer number (974134069).

Almost surely, 23871874497 is an apocalyptic number.

It is an amenable number.

3871874497 is a deficient number, since it is larger than the sum of its proper divisors (24661779).

3871874497 is a wasteful number, since it uses less digits than its factorization.

3871874497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24661778.

The product of its digits is 9483264, while the sum is 58.

The square root of 3871874497 is about 62224.3882814448. The cubic root of 3871874497 is about 1570.2679160617.

The spelling of 3871874497 in words is "three billion, eight hundred seventy-one million, eight hundred seventy-four thousand, four hundred ninety-seven".

Divisors: 1 157 24661621 3871874497