1490495638 has 16 divisors (see below), whose sum is σ = 2393861040. Its totient is φ = 693527296.

The previous prime is 1490495623. The next prime is 1490495647. The reversal of 1490495638 is 8365940941.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1490495591 and 1490495600.

It is a congruent number.

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, 243256 + ... + 249307.

It is an arithmetic number, because the mean of its divisors is an integer number (149616315).

Almost surely, 2^1490495638 is an apocalyptic number.

1490495638 is a deficient number, since it is larger than the sum of its proper divisors (903365402).

1490495638 is a wasteful number, since it uses less digits than its factorization.

1490495638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492671.

The product of its (nonzero) digits is 933120, while the sum is 49.

The square root of 1490495638 is about 38606.9376925961. The cubic root of 1490495638 is about 1142.2913894983.

The spelling of 1490495638 in words is "one billion, four hundred ninety million, four hundred ninety-five thousand, six hundred thirty-eight".