1631220196 has 12 divisors (see below), whose sum is σ = 2854927152. Its totient is φ = 815526728.

The previous prime is 1631220139. The next prime is 1631220197. The reversal of 1631220196 is 6910221361.

It is not an unprimeable number, because it can be changed into a prime (1631220197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49731 + ... + 75733.

It is an arithmetic number, because the mean of its divisors is an integer number (237910596).

Almost surely, 2^1631220196 is an apocalyptic number.

It is an amenable number.

1631220196 is a deficient number, since it is larger than the sum of its proper divisors (1223706956).

1631220196 is a wasteful number, since it uses less digits than its factorization.

1631220196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41690 (or 41688 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 1631220196 is about 40388.3670875662. The cubic root of 1631220196 is about 1177.1655121314.

The spelling of 1631220196 in words is "one billion, six hundred thirty-one million, two hundred twenty thousand, one hundred ninety-six".