1208807893764 has 135 divisors (see below), whose sum is σ = 3357817664047. Its totient is φ = 379128301056.

The previous prime is 1208807893723. The next prime is 1208807893841. The reversal of 1208807893764 is 4673987088021.

The square root of 1208807893764 is 1099458.

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

It can be written as a sum of positive squares in 4 ways, for example, as 14246332164 + 1194561561600 = 119358^2 + 1092960^2 .

It is a super-2 number, since 2×1208807893764² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 336432352 + ... + 336435944.

Almost surely, 2^{1208807893764} is an apocalyptic number.

1208807893764 is the 1099458-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1208807893764

1208807893764 is an abundant number, since it is smaller than the sum of its proper divisors (2149009770283).

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

1208807893764 is an frugal number, since it uses more digits than its factorization.

1208807893764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7236 (or 3615 counting only the distinct ones).

The product of its (nonzero) digits is 32514048, while the sum is 63.

The spelling of 1208807893764 in words is "one trillion, two hundred eight billion, eight hundred seven million, eight hundred ninety-three thousand, seven hundred sixty-four".