1965065136 has 20 divisors (see below), whose sum is σ = 5076418392. Its totient is φ = 655021696.

The previous prime is 1965065129. The next prime is 1965065147. The reversal of 1965065136 is 6315605691.

It is a super-2 number, since 2×1965065136² = 7722961977445396992, which contains 22 as substring.

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, 20469381 + ... + 20469476.

Almost surely, 2^1965065136 is an apocalyptic number.

1965065136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1965065136 is an abundant number, since it is smaller than the sum of its proper divisors (3111353256).

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

1965065136 is a wasteful number, since it uses less digits than its factorization.

1965065136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40938868 (or 40938862 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 42.

The square root of 1965065136 is about 44329.0552121292. The cubic root of 1965065136 is about 1252.5420558705.

The spelling of 1965065136 in words is "one billion, nine hundred sixty-five million, sixty-five thousand, one hundred thirty-six".