1213652044 has 12 divisors (see below), whose sum is σ = 2316972168. Its totient is φ = 551660000.

The previous prime is 1213652021. The next prime is 1213652047. The reversal of 1213652044 is 4402563121.

It is not an unprimeable number, because it can be changed into a prime (1213652047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13791457 + ... + 13791544.

It is an arithmetic number, because the mean of its divisors is an integer number (193081014).

Almost surely, 2^1213652044 is an apocalyptic number.

It is an amenable number.

1213652044 is a deficient number, since it is larger than the sum of its proper divisors (1103320124).

1213652044 is a wasteful number, since it uses less digits than its factorization.

1213652044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27583016 (or 27583014 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1213652044 is about 34837.5091532101. The cubic root of 1213652044 is about 1066.6732333363.

The spelling of 1213652044 in words is "one billion, two hundred thirteen million, six hundred fifty-two thousand, forty-four".