1208840464 has 20 divisors (see below), whose sum is σ = 2522292556. Its totient is φ = 557926272.

The previous prime is 1208840447. The next prime is 1208840473. The reversal of 1208840464 is 4640488021.

It can be written as a sum of positive squares in 2 ways, for example, as 640494864 + 568345600 = 25308^2 + 23840^2 .

It is a super-2 number, since 2×1208840464² = 2922590534807470592, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905659 + ... + 2906074.

Almost surely, 2^1208840464 is an apocalyptic number.

It is an amenable number.

1208840464 is an abundant number, since it is smaller than the sum of its proper divisors (1313452092).

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

1208840464 is a wasteful number, since it uses less digits than its factorization.

1208840464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5811754 (or 5811748 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 1208840464 is about 34768.3831087958. The cubic root of 1208840464 is about 1065.2617411588.

The spelling of 1208840464 in words is "one billion, two hundred eight million, eight hundred forty thousand, four hundred sixty-four".