2123459915 has 8 divisors (see below), whose sum is σ = 2548782288. Its totient is φ = 1698347680.

The previous prime is 2123459911. The next prime is 2123459951. The reversal of 2123459915 is 5199543212.

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

It is not a de Polignac number, because 2123459915 - 2² = 2123459911 is a prime.

It is a super-2 number, since 2×2123459915² = 9018164021223614450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123459911) 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, 29372 + ... + 71481.

It is an arithmetic number, because the mean of its divisors is an integer number (318597786).

Almost surely, 2^2123459915 is an apocalyptic number.

2123459915 is a deficient number, since it is larger than the sum of its proper divisors (425322373).

2123459915 is a wasteful number, since it uses less digits than its factorization.

2123459915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105069.

The product of its digits is 97200, while the sum is 41.

The square root of 2123459915 is about 46081.0146915191. The cubic root of 2123459915 is about 1285.3301326423.

The spelling of 2123459915 in words is "two billion, one hundred twenty-three million, four hundred fifty-nine thousand, nine hundred fifteen".