1923190864 has 40 divisors (see below), whose sum is σ = 4262743040. Its totient is φ = 823402368.

The previous prime is 1923190861. The next prime is 1923190873. The reversal of 1923190864 is 4680913291.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1923190864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1923190861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111697 + ... + 127759.

It is an arithmetic number, because the mean of its divisors is an integer number (106568576).

Almost surely, 2^1923190864 is an apocalyptic number.

1923190864 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1923190864 is an abundant number, since it is smaller than the sum of its proper divisors (2339552176).

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

1923190864 is a wasteful number, since it uses less digits than its factorization.

1923190864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17147 (or 17141 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 1923190864 is about 43854.2000725130. The cubic root of 1923190864 is about 1243.5811460577.

The spelling of 1923190864 in words is "one billion, nine hundred twenty-three million, one hundred ninety thousand, eight hundred sixty-four".