1964091536 has 20 divisors (see below), whose sum is σ = 4151375664. Its totient is φ = 892768800.

The previous prime is 1964091487. The next prime is 1964091557. The reversal of 1964091536 is 6351904691.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 5579630 + ... + 5579981.

Almost surely, 2^1964091536 is an apocalyptic number.

1964091536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1964091536 is an abundant number, since it is smaller than the sum of its proper divisors (2187284128).

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

1964091536 is a wasteful number, since it uses less digits than its factorization.

1964091536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11159630 (or 11159624 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 1964091536 is about 44318.0723407506. The cubic root of 1964091536 is about 1252.3351625761.

The spelling of 1964091536 in words is "one billion, nine hundred sixty-four million, ninety-one thousand, five hundred thirty-six".