1499468661 has 6 divisors (see below), whose sum is σ = 2165899190. Its totient is φ = 999645768.

The previous prime is 1499468639. The next prime is 1499468669. The reversal of 1499468661 is 1668649941.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1274918436 + 224550225 = 35706^2 + 14985^2 .

It is not a de Polignac number, because 1499468661 - 2⁷ = 1499468533 is a prime.

It is a super-2 number, since 2×1499468661² = 4496812530642265842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1499468598 and 1499468607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1499468669) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83303806 + ... + 83303823.

Almost surely, 2^1499468661 is an apocalyptic number.

It is an amenable number.

1499468661 is a deficient number, since it is larger than the sum of its proper divisors (666430529).

1499468661 is a wasteful number, since it uses less digits than its factorization.

1499468661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166607635 (or 166607632 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1499468661 is about 38722.9732975142. The cubic root of 1499468661 is about 1144.5790640751.

The spelling of 1499468661 in words is "one billion, four hundred ninety-nine million, four hundred sixty-eight thousand, six hundred sixty-one".