490945451906 has 96 divisors (see below), whose sum is σ = 943530197760. Its totient is φ = 187371055872.

The previous prime is 490945451869. The next prime is 490945451923. The reversal of 490945451906 is 609154549094.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122336756 + ... + 122340768.

It is an arithmetic number, because the mean of its divisors is an integer number (9828439560).

Almost surely, 2^490945451906 is an apocalyptic number.

490945451906 is a deficient number, since it is larger than the sum of its proper divisors (452584745854).

490945451906 is a wasteful number, since it uses less digits than its factorization.

490945451906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5860 (or 5847 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 490945451906 in words is "four hundred ninety billion, nine hundred forty-five million, four hundred fifty-one thousand, nine hundred six".