3890762138 has 4 divisors (see below), whose sum is σ = 5836143210. Its totient is φ = 1945381068.

The previous prime is 3890762123. The next prime is 3890762143. The reversal of 3890762138 is 8312670983.

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

It can be written as a sum of positive squares in only one way, i.e., 2198015689 + 1692746449 = 46883^2 + 41143^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3890762092 and 3890762101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972690533 + ... + 972690536.

Almost surely, 2^3890762138 is an apocalyptic number.

3890762138 is a deficient number, since it is larger than the sum of its proper divisors (1945381072).

3890762138 is a wasteful number, since it uses less digits than its factorization.

3890762138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1945381071.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 3890762138 is about 62375.9740444989. The cubic root of 3890762138 is about 1572.8171171759.

The spelling of 3890762138 in words is "three billion, eight hundred ninety million, seven hundred sixty-two thousand, one hundred thirty-eight".