1313728415 has 8 divisors (see below), whose sum is σ = 1576690800. Its totient is φ = 1050838272.

The previous prime is 1313728393. The next prime is 1313728439. The reversal of 1313728415 is 5148273131.

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 1313728415 - 2¹² = 1313724319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37487 + ... + 63503.

It is an arithmetic number, because the mean of its divisors is an integer number (197086350).

Almost surely, 2^1313728415 is an apocalyptic number.

1313728415 is a deficient number, since it is larger than the sum of its proper divisors (262962385).

1313728415 is a wasteful number, since it uses less digits than its factorization.

1313728415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36121.

The product of its digits is 20160, while the sum is 35.

The square root of 1313728415 is about 36245.3916381104. The cubic root of 1313728415 is about 1095.2212573195.

The spelling of 1313728415 in words is "one billion, three hundred thirteen million, seven hundred twenty-eight thousand, four hundred fifteen".