1920933137 has 4 divisors (see below), whose sum is σ = 1921023216. Its totient is φ = 1920843060.

The previous prime is 1920933097. The next prime is 1920933163. The reversal of 1920933137 is 7313390291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1920933137 - 2²⁸ = 1652497681 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1920933137.

It is not an unprimeable number, because it can be changed into a prime (1920933167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6962 + ... + 62372.

It is an arithmetic number, because the mean of its divisors is an integer number (480255804).

Almost surely, 2^1920933137 is an apocalyptic number.

It is an amenable number.

1920933137 is a deficient number, since it is larger than the sum of its proper divisors (90079).

1920933137 is an equidigital number, since it uses as much as digits as its factorization.

1920933137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90078.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 1920933137 is about 43828.4512274846. The cubic root of 1920933137 is about 1243.0943221053.

The spelling of 1920933137 in words is "one billion, nine hundred twenty million, nine hundred thirty-three thousand, one hundred thirty-seven".