1156405216 has 12 divisors (see below), whose sum is σ = 2276672832. Its totient is φ = 578202592.

The previous prime is 1156405207. The next prime is 1156405253. The reversal of 1156405216 is 6125046511.

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, 18068800 + ... + 18068863.

It is an arithmetic number, because the mean of its divisors is an integer number (189722736).

Almost surely, 2^1156405216 is an apocalyptic number.

1156405216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1156405216 is a deficient number, since it is larger than the sum of its proper divisors (1120267616).

1156405216 is an equidigital number, since it uses as much as digits as its factorization.

1156405216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36137673 (or 36137665 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 1156405216 is about 34005.9585367035. The cubic root of 1156405216 is about 1049.6310770437.

The spelling of 1156405216 in words is "one billion, one hundred fifty-six million, four hundred five thousand, two hundred sixteen".