490578137 has 8 divisors (see below), whose sum is σ = 560863296. Its totient is φ = 420343632.

The previous prime is 490578133. The next prime is 490578139. The reversal of 490578137 is 731875094.

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

It is a cyclic number.

It is not a de Polignac number, because 490578137 - 2² = 490578133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490578133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11063 + ... + 33219.

It is an arithmetic number, because the mean of its divisors is an integer number (70107912).

Almost surely, 2^490578137 is an apocalyptic number.

It is an amenable number.

490578137 is a deficient number, since it is larger than the sum of its proper divisors (70285159).

490578137 is a wasteful number, since it uses less digits than its factorization.

490578137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25327.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 490578137 is about 22148.9985552395. The cubic root of 490578137 is about 788.6834542425.

The spelling of 490578137 in words is "four hundred ninety million, five hundred seventy-eight thousand, one hundred thirty-seven".