2112015690 has 24 divisors (see below), whose sum is σ = 5491241028. Its totient is φ = 563204160.

The previous prime is 2112015679. The next prime is 2112015691. The reversal of 2112015690 is 965102112.

It can be written as a sum of positive squares in 2 ways, for example, as 1876362489 + 235653201 = 43317^2 + 15351^2 .

It is a super-2 number, since 2×2112015690² = 8921220549612352200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112015691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11733331 + ... + 11733510.

Almost surely, 2^2112015690 is an apocalyptic number.

2112015690 is an abundant number, since it is smaller than the sum of its proper divisors (3379225338).

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

2112015690 is a wasteful number, since it uses less digits than its factorization.

2112015690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23466854 (or 23466851 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 2112015690 is about 45956.6718768886. The cubic root of 2112015690 is about 1283.0169091504.

The spelling of 2112015690 in words is "two billion, one hundred twelve million, fifteen thousand, six hundred ninety".