3138390870 has 16 divisors (see below), whose sum is σ = 7532138160. Its totient is φ = 836904224.

The previous prime is 3138390851. The next prime is 3138390889. The reversal of 3138390870 is 780938313.

It is an interprime number because it is at equal distance from previous prime (3138390851) and next prime (3138390889).

It is a congruent number.

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, 52306485 + ... + 52306544.

It is an arithmetic number, because the mean of its divisors is an integer number (470758635).

Almost surely, 2^3138390870 is an apocalyptic number.

3138390870 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3138390870 is an abundant number, since it is smaller than the sum of its proper divisors (4393747290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3138390870 is a wasteful number, since it uses less digits than its factorization.

3138390870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104613039.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 3138390870 is about 56021.3429864012. The cubic root of 3138390870 is about 1464.0941675894.

The spelling of 3138390870 in words is "three billion, one hundred thirty-eight million, three hundred ninety thousand, eight hundred seventy".