2115922949 has 24 divisors (see below), whose sum is σ = 2548113408. Its totient is φ = 1750079520.

The previous prime is 2115922937. The next prime is 2115922951. The reversal of 2115922949 is 9492295112.

It is not a de Polignac number, because 2115922949 - 2⁸ = 2115922693 is a prime.

It is a super-2 number, since 2×2115922949² = 8954259852209713202, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115922909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579959 + ... + 583595.

It is an arithmetic number, because the mean of its divisors is an integer number (106171392).

Almost surely, 2^2115922949 is an apocalyptic number.

It is an amenable number.

2115922949 is a deficient number, since it is larger than the sum of its proper divisors (432190459).

2115922949 is a wasteful number, since it uses less digits than its factorization.

2115922949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065 (or 4058 counting only the distinct ones).

The product of its digits is 116640, while the sum is 44.

The square root of 2115922949 is about 45999.1624815061. The cubic root of 2115922949 is about 1283.8076215711.

The spelling of 2115922949 in words is "two billion, one hundred fifteen million, nine hundred twenty-two thousand, nine hundred forty-nine".