2115165788 has 24 divisors (see below), whose sum is σ = 3716512800. Its totient is φ = 1053315648.

The previous prime is 2115165781. The next prime is 2115165809. The reversal of 2115165788 is 8875615112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115165781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1479458 + ... + 1480886.

It is an arithmetic number, because the mean of its divisors is an integer number (154854700).

Almost surely, 2^2115165788 is an apocalyptic number.

It is an amenable number.

2115165788 is a deficient number, since it is larger than the sum of its proper divisors (1601347012).

2115165788 is a wasteful number, since it uses less digits than its factorization.

2115165788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669 (or 2667 counting only the distinct ones).

The product of its digits is 134400, while the sum is 44.

The square root of 2115165788 is about 45990.9315843895. The cubic root of 2115165788 is about 1283.6544709043.

The spelling of 2115165788 in words is "two billion, one hundred fifteen million, one hundred sixty-five thousand, seven hundred eighty-eight".