1923540864 has 96 divisors (see below), whose sum is σ = 5943652200. Its totient is φ = 549577728.

The previous prime is 1923540863. The next prime is 1923540881. The reversal of 1923540864 is 4680453291.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923540863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32299 + ... + 69930.

Almost surely, 2^1923540864 is an apocalyptic number.

1923540864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1923540864 is an abundant number, since it is smaller than the sum of its proper divisors (4020111336).

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

1923540864 is a wasteful number, since it uses less digits than its factorization.

1923540864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102260 (or 102241 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 1923540864 is about 43858.1903867453. The cubic root of 1923540864 is about 1243.6565809349.

The spelling of 1923540864 in words is "one billion, nine hundred twenty-three million, five hundred forty thousand, eight hundred sixty-four".