2378999045 has 4 divisors (see below), whose sum is σ = 2854798860. Its totient is φ = 1903199232.

The previous prime is 2378999041. The next prime is 2378999053. The reversal of 2378999045 is 5409998732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1005777796 + 1373221249 = 31714^2 + 37057^2 .

It is a cyclic number.

It is not a de Polignac number, because 2378999045 - 2² = 2378999041 is a prime.

It is a super-2 number, since 2×2378999045² = 11319272912221824050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378999041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237899900 + ... + 237899909.

It is an arithmetic number, because the mean of its divisors is an integer number (713699715).

Almost surely, 2^2378999045 is an apocalyptic number.

It is an amenable number.

2378999045 is a deficient number, since it is larger than the sum of its proper divisors (475799815).

2378999045 is an equidigital number, since it uses as much as digits as its factorization.

2378999045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475799814.

The product of its (nonzero) digits is 4898880, while the sum is 56.

The square root of 2378999045 is about 48774.9838031752. The cubic root of 2378999045 is about 1334.9492506437.

The spelling of 2378999045 in words is "two billion, three hundred seventy-eight million, nine hundred ninety-nine thousand, forty-five".