1665230499 has 12 divisors (see below), whose sum is σ = 2407275000. Its totient is φ = 1109257344.

The previous prime is 1665230491. The next prime is 1665230533. The reversal of 1665230499 is 9940325661.

It is not a de Polignac number, because 1665230499 - 2³ = 1665230491 is a prime.

It is a super-2 number, since 2×1665230499² = 5545985229599578002, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1665230491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62829 + ... + 85310.

It is an arithmetic number, because the mean of its divisors is an integer number (200606250).

Almost surely, 2^1665230499 is an apocalyptic number.

1665230499 is a deficient number, since it is larger than the sum of its proper divisors (742044501).

1665230499 is a wasteful number, since it uses less digits than its factorization.

1665230499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149394 (or 149391 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1665230499 is about 40807.2358657138. The cubic root of 1665230499 is about 1185.2904506211.

The spelling of 1665230499 in words is "one billion, six hundred sixty-five million, two hundred thirty thousand, four hundred ninety-nine".