1205921264 has 10 divisors (see below), whose sum is σ = 2336472480. Its totient is φ = 602960624.

The previous prime is 1205921251. The next prime is 1205921281. The reversal of 1205921264 is 4621295021.

It is a self number, because there is not a number n which added to its sum of digits gives 1205921264.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37685024 + ... + 37685055.

It is an arithmetic number, because the mean of its divisors is an integer number (233647248).

Almost surely, 2^1205921264 is an apocalyptic number.

It is an amenable number.

1205921264 is a deficient number, since it is larger than the sum of its proper divisors (1130551216).

1205921264 is an equidigital number, since it uses as much as digits as its factorization.

1205921264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75370087 (or 75370081 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 1205921264 is about 34726.3770641281. The cubic root of 1205921264 is about 1064.4035582635.

The spelling of 1205921264 in words is "one billion, two hundred five million, nine hundred twenty-one thousand, two hundred sixty-four".