2115019449 has 6 divisors (see below), whose sum is σ = 3055028106. Its totient is φ = 1410012960.

The previous prime is 2115019397. The next prime is 2115019451. The reversal of 2115019449 is 9449105112.

It is a happy number.

2115019449 is a `hidden beast` number, since 21 + 1 + 501 + 94 + 49 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1073021049 + 1041998400 = 32757^2 + 32280^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2115019449 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2115019549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117501072 + ... + 117501089.

It is an arithmetic number, because the mean of its divisors is an integer number (509171351).

Almost surely, 2^2115019449 is an apocalyptic number.

It is an amenable number.

2115019449 is a deficient number, since it is larger than the sum of its proper divisors (940008657).

2115019449 is a wasteful number, since it uses less digits than its factorization.

2115019449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235002167 (or 235002164 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 2115019449 is about 45989.3406019264. The cubic root of 2115019449 is about 1283.6248667562.

The spelling of 2115019449 in words is "two billion, one hundred fifteen million, nineteen thousand, four hundred forty-nine".