1915091023 has 6 divisors (see below), whose sum is σ = 1942449152. Its totient is φ = 1888112940.

The previous prime is 1915090993. The next prime is 1915091033. The reversal of 1915091023 is 3201905191.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1915091023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915091033) 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 5 ways as a sum of consecutive naturals, for example, 184911 + ... + 194992.

Almost surely, 2^1915091023 is an apocalyptic number.

1915091023 is a deficient number, since it is larger than the sum of its proper divisors (27358129).

1915091023 is an frugal number, since it uses more digits than its factorization.

1915091023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380045 (or 379974 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 1915091023 is about 43761.7529699166. The cubic root of 1915091023 is about 1241.8328391107.

The spelling of 1915091023 in words is "one billion, nine hundred fifteen million, ninety-one thousand, twenty-three".