1921923376 has 20 divisors (see below), whose sum is σ = 3770864800. Its totient is φ = 948796992.

The previous prime is 1921923343. The next prime is 1921923413. The reversal of 1921923376 is 6733291291.

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, 758991 + ... + 761518.

It is an arithmetic number, because the mean of its divisors is an integer number (188543240).

Almost surely, 2^1921923376 is an apocalyptic number.

1921923376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1921923376 is a deficient number, since it is larger than the sum of its proper divisors (1848941424).

1921923376 is a wasteful number, since it uses less digits than its factorization.

1921923376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520596 (or 1520590 counting only the distinct ones).

The product of its digits is 122472, while the sum is 43.

The square root of 1921923376 is about 43839.7465321140. The cubic root of 1921923376 is about 1243.3078900142.

The spelling of 1921923376 in words is "one billion, nine hundred twenty-one million, nine hundred twenty-three thousand, three hundred seventy-six".