1964965580 has 12 divisors (see below), whose sum is σ = 4126427760. Its totient is φ = 785986224.

The previous prime is 1964965573. The next prime is 1964965589. The reversal of 1964965580 is 855694691.

It is a happy number.

It is a super-2 number, since 2×1964965580² = 7722179461169472800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1964965589) 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, 49124120 + ... + 49124159.

It is an arithmetic number, because the mean of its divisors is an integer number (343868980).

Almost surely, 2^1964965580 is an apocalyptic number.

1964965580 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1964965580 is an abundant number, since it is smaller than the sum of its proper divisors (2161462180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1964965580 is a wasteful number, since it uses less digits than its factorization.

1964965580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98248288 (or 98248286 counting only the distinct ones).

The product of its (nonzero) digits is 2332800, while the sum is 53.

The square root of 1964965580 is about 44327.9322775155. The cubic root of 1964965580 is about 1252.5209030207.

The spelling of 1964965580 in words is "one billion, nine hundred sixty-four million, nine hundred sixty-five thousand, five hundred eighty".