1315849923 has 24 divisors (see below), whose sum is σ = 1947593648. Its totient is φ = 855634752.

The previous prime is 1315849897. The next prime is 1315849939. The reversal of 1315849923 is 3299485131.

It is a happy number.

1315849923 is a `hidden beast` number, since 1 + 3 + 158 + 499 + 2 + 3 = 666.

1315849923 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1315849923 - 2⁵ = 1315849891 is a prime.

It is a super-2 number, since 2×1315849923² = 3462922039718211858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315849723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337461 + ... + 341337.

Almost surely, 2^1315849923 is an apocalyptic number.

1315849923 is a deficient number, since it is larger than the sum of its proper divisors (631743725).

1315849923 is a wasteful number, since it uses less digits than its factorization.

1315849923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803 (or 4800 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1315849923 is about 36274.6457322466. The cubic root of 1315849923 is about 1095.8104889601.

The spelling of 1315849923 in words is "one billion, three hundred fifteen million, eight hundred forty-nine thousand, nine hundred twenty-three".