2378783687 has 8 divisors (see below), whose sum is σ = 2792086176. Its totient is φ = 1983850272.

The previous prime is 2378783677. The next prime is 2378783699. The reversal of 2378783687 is 7863878732.

It is a happy number.

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 2378783687 - 2²² = 2374589383 is a prime.

It is a super-2 number, since 2×2378783687² = 11317223659074627938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378783647) 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, 4591988 + ... + 4592505.

It is an arithmetic number, because the mean of its divisors is an integer number (349010772).

Almost surely, 2^2378783687 is an apocalyptic number.

2378783687 is a deficient number, since it is larger than the sum of its proper divisors (413302489).

2378783687 is an equidigital number, since it uses as much as digits as its factorization.

2378783687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9184537.

The product of its digits is 18966528, while the sum is 59.

The square root of 2378783687 is about 48772.7760846151. The cubic root of 2378783687 is about 1334.9089675007.

The spelling of 2378783687 in words is "two billion, three hundred seventy-eight million, seven hundred eighty-three thousand, six hundred eighty-seven".