18611361426 has 32 divisors (see below), whose sum is σ = 42795002880. Its totient is φ = 5285688336.

The previous prime is 18611361413. The next prime is 18611361427. The reversal of 18611361426 is 62416311681.

It is not an unprimeable number, because it can be changed into a prime (18611361427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1319716 + ... + 1333743.

It is an arithmetic number, because the mean of its divisors is an integer number (1337343840).

Almost surely, 2^18611361426 is an apocalyptic number.

18611361426 is an abundant number, since it is smaller than the sum of its proper divisors (24183641454).

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

18611361426 is a wasteful number, since it uses less digits than its factorization.

18611361426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653638.

The product of its digits is 41472, while the sum is 39.

The spelling of 18611361426 in words is "eighteen billion, six hundred eleven million, three hundred sixty-one thousand, four hundred twenty-six".