2378761387 has 4 divisors (see below), whose sum is σ = 2388238776. Its totient is φ = 2369284000.

The previous prime is 2378761331. The next prime is 2378761433. The reversal of 2378761387 is 7831678732.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2378761387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2328761387) 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, 4738318 + ... + 4738819.

It is an arithmetic number, because the mean of its divisors is an integer number (597059694).

Almost surely, 2^2378761387 is an apocalyptic number.

2378761387 is a deficient number, since it is larger than the sum of its proper divisors (9477389).

2378761387 is an equidigital number, since it uses as much as digits as its factorization.

2378761387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9477388.

The product of its digits is 2370816, while the sum is 52.

The square root of 2378761387 is about 48772.5474729381. The cubic root of 2378761387 is about 1334.9047961023.

The spelling of 2378761387 in words is "two billion, three hundred seventy-eight million, seven hundred sixty-one thousand, three hundred eighty-seven".