1490516231689 has 9 divisors (see below), whose sum is σ = 1493583237831. Its totient is φ = 1487455518120.

The previous prime is 1490516231641. The next prime is 1490516231717. The reversal of 1490516231689 is 9861326150941.

The square root of 1490516231689 is 1220867.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1183489421689 + 307026810000 = 1087883^2 + 554100^2 .

It is not a de Polignac number, because 1490516231689 - 2⁹ = 1490516231177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1490516231639) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 806992164 + ... + 806994010.

Almost surely, 2^{1490516231689} is an apocalyptic number.

1490516231689 is the 1220867-th square number.

1490516231689 is the 610434-th centered octagonal number.

It is an amenable number.

1490516231689 is a deficient number, since it is larger than the sum of its proper divisors (3067006142).

1490516231689 is an frugal number, since it uses more digits than its factorization.

1490516231689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1490516231689 in words is "one trillion, four hundred ninety billion, five hundred sixteen million, two hundred thirty-one thousand, six hundred eighty-nine".