490851637 has 2 divisors, whose sum is σ = 490851638. Its totient is φ = 490851636.

The previous prime is 490851601. The next prime is 490851649. The reversal of 490851637 is 736158094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 265070961 + 225780676 = 16281^2 + 15026^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-490851637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 490851593 and 490851602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490851667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245425818 + 245425819.

It is an arithmetic number, because the mean of its divisors is an integer number (245425819).

Almost surely, 2^490851637 is an apocalyptic number.

It is an amenable number.

490851637 is a deficient number, since it is larger than the sum of its proper divisors (1).

490851637 is an equidigital number, since it uses as much as digits as its factorization.

490851637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 490851637 is about 22155.1717889977. The cubic root of 490851637 is about 788.8299921300.

The spelling of 490851637 in words is "four hundred ninety million, eight hundred fifty-one thousand, six hundred thirty-seven".