2115406199 has 4 divisors (see below), whose sum is σ = 2164601736. Its totient is φ = 2066210664.

The previous prime is 2115406141. The next prime is 2115406207. The reversal of 2115406199 is 9916045112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115406199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115406109) 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, 24597704 + ... + 24597789.

It is an arithmetic number, because the mean of its divisors is an integer number (541150434).

Almost surely, 2^2115406199 is an apocalyptic number.

2115406199 is a deficient number, since it is larger than the sum of its proper divisors (49195537).

2115406199 is an equidigital number, since it uses as much as digits as its factorization.

2115406199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49195536.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 2115406199 is about 45993.5451884283. The cubic root of 2115406199 is about 1283.7031027051.

The spelling of 2115406199 in words is "two billion, one hundred fifteen million, four hundred six thousand, one hundred ninety-nine".