1490805973 has 16 divisors (see below), whose sum is σ = 1649172096. Its totient is φ = 1340444160.

The previous prime is 1490805931. The next prime is 1490805977. The reversal of 1490805973 is 3795080941.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1490805973 - 2¹⁷ = 1490674901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490805977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402058 + ... + 405748.

It is an arithmetic number, because the mean of its divisors is an integer number (103073256).

Almost surely, 2^1490805973 is an apocalyptic number.

It is an amenable number.

1490805973 is a deficient number, since it is larger than the sum of its proper divisors (158366123).

1490805973 is a wasteful number, since it uses less digits than its factorization.

1490805973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 1490805973 is about 38610.9566444552. The cubic root of 1490805973 is about 1142.3706625466.

The spelling of 1490805973 in words is "one billion, four hundred ninety million, eight hundred five thousand, nine hundred seventy-three".