3198761644 has 48 divisors (see below), whose sum is σ = 6361689600. Its totient is φ = 1395130176.

The previous prime is 3198761627. The next prime is 3198761653. The reversal of 3198761644 is 4461678913.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 410109 + ... + 417835.

It is an arithmetic number, because the mean of its divisors is an integer number (132535200).

Almost surely, 2^3198761644 is an apocalyptic number.

It is an amenable number.

3198761644 is a deficient number, since it is larger than the sum of its proper divisors (3162927956).

3198761644 is a wasteful number, since it uses less digits than its factorization.

3198761644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8182 (or 8180 counting only the distinct ones).

The product of its digits is 870912, while the sum is 49.

The square root of 3198761644 is about 56557.5958117033. The cubic root of 3198761644 is about 1473.4224856590.

The spelling of 3198761644 in words is "three billion, one hundred ninety-eight million, seven hundred sixty-one thousand, six hundred forty-four".