1490992640 has 40 divisors (see below), whose sum is σ = 3574893960. Its totient is φ = 596396032.

The previous prime is 1490992627. The next prime is 1490992669. The reversal of 1490992640 is 462990941.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 1490992591 and 1490992600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288650 + ... + 293769.

It is an arithmetic number, because the mean of its divisors is an integer number (89372349).

Almost surely, 2^1490992640 is an apocalyptic number.

1490992640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490992640 is an abundant number, since it is smaller than the sum of its proper divisors (2083901320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1490992640 is an frugal number, since it uses more digits than its factorization.

1490992640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582442 (or 582426 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 1490992640 is about 38613.3738489659. The cubic root of 1490992640 is about 1142.4183401136.

The spelling of 1490992640 in words is "one billion, four hundred ninety million, nine hundred ninety-two thousand, six hundred forty".