2378999999 has 4 divisors (see below), whose sum is σ = 2379143760. Its totient is φ = 2378856240.

The previous prime is 2378999971. The next prime is 2379000011. The reversal of 2378999999 is 9999998732.

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

It is a cyclic number.

It is not a de Polignac number, because 2378999999 - 2⁸ = 2378999743 is a prime.

It is a Duffinian number.

2378999999 is a modest number, since divided by 99999 gives 23789 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378999969) 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, 43259 + ... + 81420.

It is an arithmetic number, because the mean of its divisors is an integer number (594785940).

Almost surely, 2^2378999999 is an apocalyptic number.

2378999999 is a deficient number, since it is larger than the sum of its proper divisors (143761).

2378999999 is a wasteful number, since it uses less digits than its factorization.

2378999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143760.

The product of its digits is 178564176, while the sum is 74.

The square root of 2378999999 is about 48774.9935827776. The cubic root of 2378999999 is about 1334.9494290859.

The spelling of 2378999999 in words is "two billion, three hundred seventy-eight million, nine hundred ninety-nine thousand, nine hundred ninety-nine".