1813444676164 has 27 divisors (see below), whose sum is σ = 3488315239423. Its totient is φ = 824279568200.

The previous prime is 1813444676149. The next prime is 1813444676257. The reversal of 1813444676164 is 4616764443181.

The square root of 1813444676164 is 1346642.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29595519 + ... + 29656729.

Almost surely, 2^{1813444676164} is an apocalyptic number.

1813444676164 is the 1346642-nd square number.

It is an amenable number.

1813444676164 is a deficient number, since it is larger than the sum of its proper divisors (1674870563259).

1813444676164 is an frugal number, since it uses more digits than its factorization.

1813444676164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122448 (or 61224 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 55.

The spelling of 1813444676164 in words is "one trillion, eight hundred thirteen billion, four hundred forty-four million, six hundred seventy-six thousand, one hundred sixty-four".