1618656890026 has 32 divisors (see below), whose sum is σ = 2820012511680. Its totient is φ = 688647686400.

The previous prime is 1618656890023. The next prime is 1618656890209. The reversal of 1618656890026 is 6200986568161.

It is not an unprimeable number, because it can be changed into a prime (1618656890021) 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, 11887996 + ... + 12023383.

It is an arithmetic number, because the mean of its divisors is an integer number (88125390990).

Almost surely, 2^{1618656890026} is an apocalyptic number.

1618656890026 is a deficient number, since it is larger than the sum of its proper divisors (1201355621654).

1618656890026 is a wasteful number, since it uses less digits than its factorization.

1618656890026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23911590.

The product of its (nonzero) digits is 7464960, while the sum is 58.

The spelling of 1618656890026 in words is "one trillion, six hundred eighteen billion, six hundred fifty-six million, eight hundred ninety thousand, twenty-six".