2173945915 has 8 divisors (see below), whose sum is σ = 2679241680. Its totient is φ = 1692152352.

The previous prime is 2173945903. The next prime is 2173945927. The reversal of 2173945915 is 5195493712.

It is an interprime number because it is at equal distance from previous prime (2173945903) and next prime (2173945927).

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

It is a cyclic number.

It is not a de Polignac number, because 2173945915 - 2¹³ = 2173937723 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5875345 + ... + 5875714.

It is an arithmetic number, because the mean of its divisors is an integer number (334905210).

Almost surely, 2^2173945915 is an apocalyptic number.

2173945915 is a deficient number, since it is larger than the sum of its proper divisors (505295765).

2173945915 is a wasteful number, since it uses less digits than its factorization.

2173945915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11751101.

The product of its digits is 340200, while the sum is 46.

The square root of 2173945915 is about 46625.5929184820. The cubic root of 2173945915 is about 1295.4368447159.

The spelling of 2173945915 in words is "two billion, one hundred seventy-three million, nine hundred forty-five thousand, nine hundred fifteen".