1314657985 has 4 divisors (see below), whose sum is σ = 1577589588. Its totient is φ = 1051726384.

The previous prime is 1314657973. The next prime is 1314658003. The reversal of 1314657985 is 5897564131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 859603761 + 455054224 = 29319^2 + 21332^2 .

It is a cyclic number.

It is not a de Polignac number, because 1314657985 - 2⁹ = 1314657473 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131465794 + ... + 131465803.

It is an arithmetic number, because the mean of its divisors is an integer number (394397397).

Almost surely, 2^1314657985 is an apocalyptic number.

It is an amenable number.

1314657985 is a deficient number, since it is larger than the sum of its proper divisors (262931603).

1314657985 is an equidigital number, since it uses as much as digits as its factorization.

1314657985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262931602.

The product of its digits is 907200, while the sum is 49.

The square root of 1314657985 is about 36258.2126558936. The cubic root of 1314657985 is about 1095.4795158710.

The spelling of 1314657985 in words is "one billion, three hundred fourteen million, six hundred fifty-seven thousand, nine hundred eighty-five".