1213652412 has 72 divisors (see below), whose sum is σ = 3509987936. Its totient is φ = 346374144.

The previous prime is 1213652393. The next prime is 1213652413. The reversal of 1213652412 is 2142563121.

1213652412 is a `hidden beast` number, since 1 + 2 + 1 + 3 + 652 + 4 + 1 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213652413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 288468 + ... + 292644.

Almost surely, 2^1213652412 is an apocalyptic number.

1213652412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213652412 is an abundant number, since it is smaller than the sum of its proper divisors (2296335524).

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

1213652412 is a wasteful number, since it uses less digits than its factorization.

1213652412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5347 (or 5342 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1213652412 is about 34837.5144348732. The cubic root of 1213652412 is about 1066.6733411475.

The spelling of 1213652412 in words is "one billion, two hundred thirteen million, six hundred fifty-two thousand, four hundred twelve".