490136858 has 8 divisors (see below), whose sum is σ = 735909300. Its totient is φ = 244833760.

The previous prime is 490136851. The next prime is 490136861. The reversal of 490136858 is 858631094.

It can be written as a sum of positive squares in 2 ways, for example, as 487835569 + 2301289 = 22087^2 + 1517^2 .

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

It is a super-2 number, since 2×490136858² = 480468279140224328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (490136851) 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, 114713 + ... + 118908.

Almost surely, 2^490136858 is an apocalyptic number.

490136858 is a deficient number, since it is larger than the sum of its proper divisors (245772442).

490136858 is a wasteful number, since it uses less digits than its factorization.

490136858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234672.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 490136858 is about 22139.0347124711. The cubic root of 490136858 is about 788.4469075888.

The spelling of 490136858 in words is "four hundred ninety million, one hundred thirty-six thousand, eight hundred fifty-eight".