378481858 has 4 divisors (see below), whose sum is σ = 567722790. Its totient is φ = 189240928.

The previous prime is 378481841. The next prime is 378481877. The reversal of 378481858 is 858184873.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 346071609 + 32410249 = 18603^2 + 5693^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94620463 + ... + 94620466.

Almost surely, 2^378481858 is an apocalyptic number.

378481858 is a deficient number, since it is larger than the sum of its proper divisors (189240932).

378481858 is a wasteful number, since it uses less digits than its factorization.

378481858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189240931.

The product of its digits is 1720320, while the sum is 52.

The square root of 378481858 is about 19454.6101991276. The cubic root of 378481858 is about 723.3497832744.

The spelling of 378481858 in words is "three hundred seventy-eight million, four hundred eighty-one thousand, eight hundred fifty-eight".