1913238359555 has 32 divisors (see below), whose sum is σ = 2472670307520. Its totient is φ = 1416031027200.

The previous prime is 1913238359519. The next prime is 1913238359563. The reversal of 1913238359555 is 5559538323191.

It is not a de Polignac number, because 1913238359555 - 2²² = 1913234165251 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1913238359494 and 1913238359503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 391667 + ... + 1994963.

It is an arithmetic number, because the mean of its divisors is an integer number (77270947110).

Almost surely, 2^{1913238359555} is an apocalyptic number.

1913238359555 is a deficient number, since it is larger than the sum of its proper divisors (559431947965).

1913238359555 is a wasteful number, since it uses less digits than its factorization.

1913238359555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603559.

The product of its digits is 21870000, while the sum is 59.

The spelling of 1913238359555 in words is "one trillion, nine hundred thirteen billion, two hundred thirty-eight million, three hundred fifty-nine thousand, five hundred fifty-five".