1316609479618 has 4 divisors (see below), whose sum is σ = 1974914219430. Its totient is φ = 658304739808.

The previous prime is 1316609479613. The next prime is 1316609479643. The reversal of 1316609479618 is 8169749066131.

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

It can be written as a sum of positive squares in only one way, i.e., 814746332689 + 501863146929 = 902633^2 + 708423^2 .

It is not an unprimeable number, because it can be changed into a prime (1316609479613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 329152369903 + ... + 329152369906.

Almost surely, 2^{1316609479618} is an apocalyptic number.

1316609479618 is a deficient number, since it is larger than the sum of its proper divisors (658304739812).

1316609479618 is an equidigital number, since it uses as much as digits as its factorization.

1316609479618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 658304739811.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 1316609479618 in words is "one trillion, three hundred sixteen billion, six hundred nine million, four hundred seventy-nine thousand, six hundred eighteen".