492158378 has 4 divisors (see below), whose sum is σ = 738237570. Its totient is φ = 246079188.

The previous prime is 492158363. The next prime is 492158399. The reversal of 492158378 is 873851294.

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., 442976209 + 49182169 = 21047^2 + 7013^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123039593 + ... + 123039596.

Almost surely, 2^492158378 is an apocalyptic number.

492158378 is a deficient number, since it is larger than the sum of its proper divisors (246079192).

492158378 is a wasteful number, since it uses less digits than its factorization.

492158378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246079191.

The product of its digits is 483840, while the sum is 47.

The square root of 492158378 is about 22184.6428413892. The cubic root of 492158378 is about 789.5293773344.

The spelling of 492158378 in words is "four hundred ninety-two million, one hundred fifty-eight thousand, three hundred seventy-eight".