13074671618 has 4 divisors (see below), whose sum is σ = 19612007430. Its totient is φ = 6537335808.

The previous prime is 13074671581. The next prime is 13074671639. The reversal of 13074671618 is 81617647031.

It is a happy number.

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., 8054524009 + 5020147609 = 89747^2 + 70853^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3268667903 + ... + 3268667906.

Almost surely, 2^13074671618 is an apocalyptic number.

13074671618 is a deficient number, since it is larger than the sum of its proper divisors (6537335812).

13074671618 is an equidigital number, since it uses as much as digits as its factorization.

13074671618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6537335811.

The product of its (nonzero) digits is 169344, while the sum is 44.

The spelling of 13074671618 in words is "thirteen billion, seventy-four million, six hundred seventy-one thousand, six hundred eighteen".