1818612956664 has 96 divisors (see below), whose sum is σ = 5876470472400. Its totient is φ = 519603698880.

The previous prime is 1818612956653. The next prime is 1818612956681. The reversal of 1818612956664 is 4666592168181.

It is a super-2 number, since 2×1818612956664² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85902727 + ... + 85923894.

Almost surely, 2^{1818612956664} is an apocalyptic number.

1818612956664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1818612956664 is an abundant number, since it is smaller than the sum of its proper divisors (4057857515736).

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

1818612956664 is a wasteful number, since it uses less digits than its factorization.

1818612956664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171826650 (or 171826633 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 63.

The spelling of 1818612956664 in words is "one trillion, eight hundred eighteen billion, six hundred twelve million, nine hundred fifty-six thousand, six hundred sixty-four".