1315755618 has 32 divisors (see below), whose sum is σ = 2747730816. Its totient is φ = 419240448.

The previous prime is 1315755587. The next prime is 1315755671. The reversal of 1315755618 is 8165575131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1315755618.

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, 355996 + ... + 359672.

It is an arithmetic number, because the mean of its divisors is an integer number (85866588).

Almost surely, 2^1315755618 is an apocalyptic number.

1315755618 is an abundant number, since it is smaller than the sum of its proper divisors (1431975198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1315755618 is a wasteful number, since it uses less digits than its factorization.

1315755618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298.

The product of its digits is 126000, while the sum is 42.

The square root of 1315755618 is about 36273.3458340970. The cubic root of 1315755618 is about 1095.7843099673.

The spelling of 1315755618 in words is "one billion, three hundred fifteen million, seven hundred fifty-five thousand, six hundred eighteen".