1964797531 has 8 divisors (see below), whose sum is σ = 2082124800. Its totient is φ = 1850775360.

The previous prime is 1964797529. The next prime is 1964797561. The reversal of 1964797531 is 1357974691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1964797531 - 2¹ = 1964797529 is a prime.

It is a super-2 number, since 2×1964797531² = 7720858675647391922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1964797501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825051 + ... + 827428.

It is an arithmetic number, because the mean of its divisors is an integer number (260265600).

Almost surely, 2^1964797531 is an apocalyptic number.

1964797531 is a deficient number, since it is larger than the sum of its proper divisors (117327269).

1964797531 is a wasteful number, since it uses less digits than its factorization.

1964797531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652549.

The product of its digits is 1428840, while the sum is 52.

The square root of 1964797531 is about 44326.0367165845. The cubic root of 1964797531 is about 1252.4851957140.

The spelling of 1964797531 in words is "one billion, nine hundred sixty-four million, seven hundred ninety-seven thousand, five hundred thirty-one".