1315637445 has 16 divisors (see below), whose sum is σ = 2105732160. Its totient is φ = 701435904.

The previous prime is 1315637431. The next prime is 1315637471. The reversal of 1315637445 is 5447365131.

It is not a de Polignac number, because 1315637445 - 2¹³ = 1315629253 is a prime.

It is a super-2 number, since 2×1315637445² = 3461803773372256050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36762 + ... + 63108.

It is an arithmetic number, because the mean of its divisors is an integer number (131608260).

Almost surely, 2^1315637445 is an apocalyptic number.

1315637445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1315637445 is a deficient number, since it is larger than the sum of its proper divisors (790094715).

1315637445 is a wasteful number, since it uses less digits than its factorization.

1315637445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29684.

The product of its digits is 151200, while the sum is 39.

The square root of 1315637445 is about 36271.7168741707. The cubic root of 1315637445 is about 1095.7515034708.

The spelling of 1315637445 in words is "one billion, three hundred fifteen million, six hundred thirty-seven thousand, four hundred forty-five".