3151901994 has 32 divisors (see below), whose sum is σ = 6367602240. Its totient is φ = 1040024832.

The previous prime is 3151901993. The next prime is 3151901999. The reversal of 3151901994 is 4991091513.

It is not an unprimeable number, because it can be changed into a prime (3151901993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 639612 + ... + 644520.

It is an arithmetic number, because the mean of its divisors is an integer number (198987570).

Almost surely, 2^3151901994 is an apocalyptic number.

3151901994 is an abundant number, since it is smaller than the sum of its proper divisors (3215700246).

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

3151901994 is a wasteful number, since it uses less digits than its factorization.

3151901994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5974.

The product of its (nonzero) digits is 43740, while the sum is 42.

The square root of 3151901994 is about 56141.8025538903. The cubic root of 3151901994 is about 1466.1921894835.

The spelling of 3151901994 in words is "three billion, one hundred fifty-one million, nine hundred one thousand, nine hundred ninety-four".