2115361965 has 32 divisors (see below), whose sum is σ = 3533095296. Its totient is φ = 1079688960.

The previous prime is 2115361949. The next prime is 2115361967. The reversal of 2115361965 is 5691635112.

It is a happy number.

It is not a de Polignac number, because 2115361965 - 2⁴ = 2115361949 is a prime.

It is a super-2 number, since 2×2115361965² = 8949512485937322450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115361967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2614 + ... + 65096.

It is an arithmetic number, because the mean of its divisors is an integer number (110409228).

Almost surely, 2^2115361965 is an apocalyptic number.

It is an amenable number.

2115361965 is a deficient number, since it is larger than the sum of its proper divisors (1417733331).

2115361965 is a wasteful number, since it uses less digits than its factorization.

2115361965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62589.

The product of its digits is 48600, while the sum is 39.

The square root of 2115361965 is about 45993.0643140898. The cubic root of 2115361965 is about 1283.6941550589.

The spelling of 2115361965 in words is "two billion, one hundred fifteen million, three hundred sixty-one thousand, nine hundred sixty-five".