2115922538 has 8 divisors (see below), whose sum is σ = 3174176388. Its totient is φ = 1057863744.

The previous prime is 2115922537. The next prime is 2115922541. The reversal of 2115922538 is 8352295112.

It can be written as a sum of positive squares in 2 ways, for example, as 1921682569 + 194239969 = 43837^2 + 13937^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2115922538² = 8954256373632722888, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2115922537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17681 + ... + 67412.

Almost surely, 2^2115922538 is an apocalyptic number.

2115922538 is a deficient number, since it is larger than the sum of its proper divisors (1058253850).

2115922538 is a wasteful number, since it uses less digits than its factorization.

2115922538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97528.

The product of its digits is 43200, while the sum is 38.

The square root of 2115922538 is about 45999.1580140333. The cubic root of 2115922538 is about 1283.8075384482.

The spelling of 2115922538 in words is "two billion, one hundred fifteen million, nine hundred twenty-two thousand, five hundred thirty-eight".