2378563394 has 8 divisors (see below), whose sum is σ = 3576086220. Its totient is φ = 1186534656.

The previous prime is 2378563387. The next prime is 2378563399. The reversal of 2378563394 is 4933658732.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2371203025 + 7360369 = 48695^2 + 2713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2378563399) 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, 1372439 + ... + 1374170.

Almost surely, 2^2378563394 is an apocalyptic number.

2378563394 is a deficient number, since it is larger than the sum of its proper divisors (1197522826).

2378563394 is a wasteful number, since it uses less digits than its factorization.

2378563394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747044.

The product of its digits is 3265920, while the sum is 50.

The square root of 2378563394 is about 48770.5176720527. The cubic root of 2378563394 is about 1334.8677587405.

The spelling of 2378563394 in words is "two billion, three hundred seventy-eight million, five hundred sixty-three thousand, three hundred ninety-four".