490738187 has 2 divisors, whose sum is σ = 490738188. Its totient is φ = 490738186.

The previous prime is 490738181. The next prime is 490738207. The reversal of 490738187 is 781837094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 490738187 - 2⁸ = 490737931 is a prime.

It is not a weakly prime, because it can be changed into another prime (490738181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245369093 + 245369094.

It is an arithmetic number, because the mean of its divisors is an integer number (245369094).

Almost surely, 2^490738187 is an apocalyptic number.

490738187 is a deficient number, since it is larger than the sum of its proper divisors (1).

490738187 is an equidigital number, since it uses as much as digits as its factorization.

490738187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 490738187 is about 22152.6112907711. The cubic root of 490738187 is about 788.7692136438.

The spelling of 490738187 in words is "four hundred ninety million, seven hundred thirty-eight thousand, one hundred eighty-seven".