1313690785 has 8 divisors (see below), whose sum is σ = 1719740736. Its totient is φ = 955411440.

The previous prime is 1313690771. The next prime is 1313690797. The reversal of 1313690785 is 5870963131.

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

It is not a de Polignac number, because 1313690785 - 2⁵ = 1313690753 is a prime.

It is a Duffinian 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, 11942589 + ... + 11942698.

It is an arithmetic number, because the mean of its divisors is an integer number (214967592).

Almost surely, 2^1313690785 is an apocalyptic number.

It is an amenable number.

1313690785 is a deficient number, since it is larger than the sum of its proper divisors (406049951).

1313690785 is a wasteful number, since it uses less digits than its factorization.

1313690785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23885303.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1313690785 is about 36244.8725339185. The cubic root of 1313690785 is about 1095.2108001685.

The spelling of 1313690785 in words is "one billion, three hundred thirteen million, six hundred ninety thousand, seven hundred eighty-five".