378815090 has 8 divisors (see below), whose sum is σ = 681867180. Its totient is φ = 151526032.

The previous prime is 378815089. The next prime is 378815111. The reversal of 378815090 is 90518873.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 378652681 + 162409 = 19459^2 + 403^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18940745 + ... + 18940764.

Almost surely, 2^378815090 is an apocalyptic number.

378815090 is a deficient number, since it is larger than the sum of its proper divisors (303052090).

378815090 is a wasteful number, since it uses less digits than its factorization.

378815090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37881516.

The product of its (nonzero) digits is 60480, while the sum is 41.

The square root of 378815090 is about 19463.1726601806. The cubic root of 378815090 is about 723.5620106091.

The spelling of 378815090 in words is "three hundred seventy-eight million, eight hundred fifteen thousand, ninety".