3890185138 has 16 divisors (see below), whose sum is σ = 6670044864. Its totient is φ = 1666933200.

The previous prime is 3890185129. The next prime is 3890185141. The reversal of 3890185138 is 8315810983.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73081 + ... + 114547.

It is an arithmetic number, because the mean of its divisors is an integer number (416877804).

Almost surely, 2^3890185138 is an apocalyptic number.

3890185138 is a deficient number, since it is larger than the sum of its proper divisors (2779859726).

3890185138 is a wasteful number, since it uses less digits than its factorization.

3890185138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48177.

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 3890185138 is about 62371.3486947332. The cubic root of 3890185138 is about 1572.7393637427.

The spelling of 3890185138 in words is "three billion, eight hundred ninety million, one hundred eighty-five thousand, one hundred thirty-eight".