490540138 has 16 divisors (see below), whose sum is σ = 844950240. Its totient is φ = 211237200.

The previous prime is 490540121. The next prime is 490540177. The reversal of 490540138 is 831045094.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586353 + ... + 587188.

It is an arithmetic number, because the mean of its divisors is an integer number (52809390).

Almost surely, 2^490540138 is an apocalyptic number.

490540138 is a deficient number, since it is larger than the sum of its proper divisors (354410102).

490540138 is a wasteful number, since it uses less digits than its factorization.

490540138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173573.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 490540138 is about 22148.1407346080. The cubic root of 490540138 is about 788.6630905436.

The spelling of 490540138 in words is "four hundred ninety million, five hundred forty thousand, one hundred thirty-eight".