Search a number
-
+
3138407854 = 21569203927
BaseRepresentation
bin1011101100010000…
…0100110110101110
322002201110122012221
42323010010312232
522411413022404
61235230545554
7140526012061
oct27304046656
98081418187
103138407854
1113706052aa
127370682ba
133b0284c8a
1421ab548d8
151357d3954
hexbb104dae

3138407854 has 4 divisors (see below), whose sum is σ = 4707611784. Its totient is φ = 1569203926.

The previous prime is 3138407851. The next prime is 3138407861. The reversal of 3138407854 is 4587048313.

3138407854 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 an emirpimes, since its reverse is a distinct semiprime: 4587048313 = 7576059509.

It is a self number, because there is not a number n which added to its sum of digits gives 3138407854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3138407851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 784601962 + ... + 784601965.

It is an arithmetic number, because the mean of its divisors is an integer number (1176902946).

Almost surely, 23138407854 is an apocalyptic number.

3138407854 is a deficient number, since it is larger than the sum of its proper divisors (1569203930).

3138407854 is a wasteful number, since it uses less digits than its factorization.

3138407854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1569203929.

The product of its (nonzero) digits is 322560, while the sum is 43.

The square root of 3138407854 is about 56021.4945712804. The cubic root of 3138407854 is about 1464.0968086594.

The spelling of 3138407854 in words is "three billion, one hundred thirty-eight million, four hundred seven thousand, eight hundred fifty-four".

Divisors: 1 2 1569203927 3138407854