1213073904 has 40 divisors (see below), whose sum is σ = 3581457280. Its totient is φ = 346592448.

The previous prime is 1213073893. The next prime is 1213073921. The reversal of 1213073904 is 4093703121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1804834 + ... + 1805505.

It is an arithmetic number, because the mean of its divisors is an integer number (89536432).

Almost surely, 2^1213073904 is an apocalyptic number.

1213073904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1213073904 is an abundant number, since it is smaller than the sum of its proper divisors (2368383376).

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

1213073904 is a wasteful number, since it uses less digits than its factorization.

1213073904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3610357 (or 3610351 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 1213073904 is about 34829.2104992347. The cubic root of 1213073904 is about 1066.5038315668.

The spelling of 1213073904 in words is "one billion, two hundred thirteen million, seventy-three thousand, nine hundred four".