1913385503 has 8 divisors (see below), whose sum is σ = 1976478336. Its totient is φ = 1850378400.

The previous prime is 1913385493. The next prime is 1913385527. The reversal of 1913385503 is 3055833191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1913385503 - 2⁸ = 1913385247 is a prime.

It is a super-2 number, since 2×1913385503² = 7322088166181126018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913385583) 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 7 ways as a sum of consecutive naturals, for example, 25613 + ... + 66953.

It is an arithmetic number, because the mean of its divisors is an integer number (247059792).

Almost surely, 2^1913385503 is an apocalyptic number.

1913385503 is a deficient number, since it is larger than the sum of its proper divisors (63092833).

1913385503 is a wasteful number, since it uses less digits than its factorization.

1913385503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42865.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1913385503 is about 43742.2622071607. The cubic root of 1913385503 is about 1241.4640838292.

The spelling of 1913385503 in words is "one billion, nine hundred thirteen million, three hundred eighty-five thousand, five hundred three".