1315803903 has 16 divisors (see below), whose sum is σ = 1872046080. Its totient is φ = 819647424.

The previous prime is 1315803901. The next prime is 1315803943. The reversal of 1315803903 is 3093085131.

It is not a de Polignac number, because 1315803903 - 2¹ = 1315803901 is a prime.

It is a super-2 number, since 2×1315803903² = 3462679822300066818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315803901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 153951 + ... + 162272.

It is an arithmetic number, because the mean of its divisors is an integer number (117002880).

Almost surely, 2^1315803903 is an apocalyptic number.

1315803903 is a deficient number, since it is larger than the sum of its proper divisors (556242177).

1315803903 is a wasteful number, since it uses less digits than its factorization.

1315803903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316318.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 1315803903 is about 36274.0113993476. The cubic root of 1315803903 is about 1095.7977140011.

The spelling of 1315803903 in words is "one billion, three hundred fifteen million, eight hundred three thousand, nine hundred three".