2115165402 has 192 divisors, whose sum is σ = 5693276160. Its totient is φ = 554601600.

The previous prime is 2115165401. The next prime is 2115165419. The reversal of 2115165402 is 2045615112.

2115165402 is a `hidden beast` number, since 2 + 1 + 1 + 5 + 1 + 654 + 0 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (2115165401) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8042323 + ... + 8042585.

It is an arithmetic number, because the mean of its divisors is an integer number (29652480).

Almost surely, 2^2115165402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2115165402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2846638080).

2115165402 is an abundant number, since it is smaller than the sum of its proper divisors (3578110758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2115165402 is a wasteful number, since it uses less digits than its factorization.

2115165402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 2115165402 is about 45990.9273879099. The cubic root of 2115165402 is about 1283.6543928189.

The spelling of 2115165402 in words is "two billion, one hundred fifteen million, one hundred sixty-five thousand, four hundred two".