378308290 has 8 divisors (see below), whose sum is σ = 680954940. Its totient is φ = 151323312.

The previous prime is 378308279. The next prime is 378308291. The reversal of 378308290 is 92803873.

It is a happy number.

378308290 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 339333241 + 38975049 = 18421^2 + 6243^2 .

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 (378308291) 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, 18915405 + ... + 18915424.

Almost surely, 2^378308290 is an apocalyptic number.

378308290 is a deficient number, since it is larger than the sum of its proper divisors (302646650).

378308290 is a wasteful number, since it uses less digits than its factorization.

378308290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37830836.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 378308290 is about 19450.1488426181. The cubic root of 378308290 is about 723.2391927053.

The spelling of 378308290 in words is "three hundred seventy-eight million, three hundred eight thousand, two hundred ninety".