378635801 has 4 divisors (see below), whose sum is σ = 381047652. Its totient is φ = 376223952.

The previous prime is 378635771. The next prime is 378635809. The reversal of 378635801 is 108536873.

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

It can be written as a sum of positive squares in 2 ways, for example, as 73085401 + 305550400 = 8549^2 + 17480^2 .

It is a cyclic number.

It is not a de Polignac number, because 378635801 - 2²⁶ = 311526937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378635809) 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, 1205690 + ... + 1206003.

It is an arithmetic number, because the mean of its divisors is an integer number (95261913).

Almost surely, 2^378635801 is an apocalyptic number.

It is an amenable number.

378635801 is a deficient number, since it is larger than the sum of its proper divisors (2411851).

378635801 is a wasteful number, since it uses less digits than its factorization.

378635801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2411850.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 378635801 is about 19458.5662627029. The cubic root of 378635801 is about 723.4478412916.

The spelling of 378635801 in words is "three hundred seventy-eight million, six hundred thirty-five thousand, eight hundred one".