1216970165 has 16 divisors (see below), whose sum is σ = 1474502400. Its totient is φ = 964190400.

The previous prime is 1216970119. The next prime is 1216970207. The reversal of 1216970165 is 5610796121.

1216970165 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1216970165 - 2²⁴ = 1200192949 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271190 + ... + 275640.

It is an arithmetic number, because the mean of its divisors is an integer number (92156400).

Almost surely, 2^1216970165 is an apocalyptic number.

It is an amenable number.

1216970165 is a deficient number, since it is larger than the sum of its proper divisors (257532235).

1216970165 is a wasteful number, since it uses less digits than its factorization.

1216970165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972.

The product of its (nonzero) digits is 22680, while the sum is 38.

The square root of 1216970165 is about 34885.0994695443. The cubic root of 1216970165 is about 1067.6444425717.

The spelling of 1216970165 in words is "one billion, two hundred sixteen million, nine hundred seventy thousand, one hundred sixty-five".