2515138889 has 8 divisors (see below), whose sum is σ = 2659182240. Its totient is φ = 2372262336.

The previous prime is 2515138853. The next prime is 2515138939. The reversal of 2515138889 is 9888315152.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2515138889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2515138819) 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, 287264 + ... + 295889.

It is an arithmetic number, because the mean of its divisors is an integer number (332397780).

Almost surely, 2^2515138889 is an apocalyptic number.

It is an amenable number.

2515138889 is a deficient number, since it is larger than the sum of its proper divisors (144043351).

2515138889 is a wasteful number, since it uses less digits than its factorization.

2515138889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583399.

The product of its digits is 691200, while the sum is 50.

The square root of 2515138889 is about 50151.1603953488. The cubic root of 2515138889 is about 1359.9428481246.

The spelling of 2515138889 in words is "two billion, five hundred fifteen million, one hundred thirty-eight thousand, eight hundred eighty-nine".