3156938 has 4 divisors (see below), whose sum is σ = 4735410. Its totient is φ = 1578468.

The previous prime is 3156929. The next prime is 3156941. The reversal of 3156938 is 8396513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8396513 = 41 ⋅204793.

It can be written as a sum of positive squares in only one way, i.e., 2948089 + 208849 = 1717^2 + 457^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3156898 and 3156907.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 789233 + ... + 789236.

Almost surely, 2^3156938 is an apocalyptic number.

3156938 is a deficient number, since it is larger than the sum of its proper divisors (1578472).

3156938 is a wasteful number, since it uses less digits than its factorization.

3156938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578471.

The product of its digits is 19440, while the sum is 35.

The square root of 3156938 is about 1776.7774199376. Note that the first 3 decimals coincide. The cubic root of 3156938 is about 146.6972651953.

The spelling of 3156938 in words is "three million, one hundred fifty-six thousand, nine hundred thirty-eight".