3197991898 has 16 divisors (see below), whose sum is σ = 5008075776. Its totient is φ = 1528703440.

The previous prime is 3197991887. The next prime is 3197991943. The reversal of 3197991898 is 8981997913.

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, 80640 + ... + 113572.

It is an arithmetic number, because the mean of its divisors is an integer number (313004736).

Almost surely, 2^3197991898 is an apocalyptic number.

3197991898 is a deficient number, since it is larger than the sum of its proper divisors (1810083878).

3197991898 is a wasteful number, since it uses less digits than its factorization.

3197991898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35069.

The product of its digits is 8817984, while the sum is 64.

The square root of 3197991898 is about 56550.7904277208. The cubic root of 3197991898 is about 1473.3042886630.

The spelling of 3197991898 in words is "three billion, one hundred ninety-seven million, nine hundred ninety-one thousand, eight hundred ninety-eight".