1216164524 has 12 divisors (see below), whose sum is σ = 2157443064. Its totient is φ = 599752224.

The previous prime is 1216164517. The next prime is 1216164539. The reversal of 1216164524 is 4254616121.

It is a super-2 number, since 2×1216164524² = 2958112298872293152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2082182 + ... + 2082765.

It is an arithmetic number, because the mean of its divisors is an integer number (179786922).

Almost surely, 2^1216164524 is an apocalyptic number.

It is an amenable number.

1216164524 is a deficient number, since it is larger than the sum of its proper divisors (941278540).

1216164524 is a wasteful number, since it uses less digits than its factorization.

1216164524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165024 (or 4165022 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 1216164524 is about 34873.5504931746. The cubic root of 1216164524 is about 1067.4087950496.

The spelling of 1216164524 in words is "one billion, two hundred sixteen million, one hundred sixty-four thousand, five hundred twenty-four".