1955886564 has 12 divisors (see below), whose sum is σ = 4563735344. Its totient is φ = 651962184.

The previous prime is 1955886557. The next prime is 1955886571. The reversal of 1955886564 is 4656885591.

It is an interprime number because it is at equal distance from previous prime (1955886557) and next prime (1955886571).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81495262 + ... + 81495285.

Almost surely, 2^1955886564 is an apocalyptic number.

It is an amenable number.

1955886564 is an abundant number, since it is smaller than the sum of its proper divisors (2607848780).

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

1955886564 is a wasteful number, since it uses less digits than its factorization.

1955886564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162990554 (or 162990552 counting only the distinct ones).

The product of its digits is 10368000, while the sum is 57.

The square root of 1955886564 is about 44225.4063180882. The cubic root of 1955886564 is about 1250.5888562085.

The spelling of 1955886564 in words is "one billion, nine hundred fifty-five million, eight hundred eighty-six thousand, five hundred sixty-four".