6431917970 has 16 divisors (see below), whose sum is σ = 11611812888. Its totient is φ = 2565131520.

The previous prime is 6431917931. The next prime is 6431918039. The reversal of 6431917970 is 797191346.

It can be written as a sum of positive squares in 4 ways, for example, as 5913763801 + 518154169 = 76901^2 + 22763^2 .

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, 950921 + ... + 957660.

Almost surely, 2^6431917970 is an apocalyptic number.

6431917970 is a deficient number, since it is larger than the sum of its proper divisors (5179894918).

6431917970 is a wasteful number, since it uses less digits than its factorization.

6431917970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908925.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 6431917970 is about 80199.2392108554. The cubic root of 6431917970 is about 1859.7168769740.

The spelling of 6431917970 in words is "six billion, four hundred thirty-one million, nine hundred seventeen thousand, nine hundred seventy".