2115193393 has 8 divisors (see below), whose sum is σ = 2172939560. Its totient is φ = 2057477760.

The previous prime is 2115193391. The next prime is 2115193433. The reversal of 2115193393 is 3933915112.

It can be written as a sum of positive squares in 4 ways, for example, as 867125809 + 1248067584 = 29447^2 + 35328^2 .

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 2115193393 - 2¹ = 2115193391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115193391) 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, 243973 + ... + 252493.

It is an arithmetic number, because the mean of its divisors is an integer number (271617445).

Almost surely, 2^2115193393 is an apocalyptic number.

It is an amenable number.

2115193393 is a deficient number, since it is larger than the sum of its proper divisors (57746167).

2115193393 is an equidigital number, since it uses as much as digits as its factorization.

2115193393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15267.

The product of its digits is 21870, while the sum is 37.

The square root of 2115193393 is about 45991.2316969224. The cubic root of 2115193393 is about 1283.6600551990.

The spelling of 2115193393 in words is "two billion, one hundred fifteen million, one hundred ninety-three thousand, three hundred ninety-three".