1868656499 has 8 divisors (see below), whose sum is σ = 1937076960. Its totient is φ = 1800501696.

The previous prime is 1868656487. The next prime is 1868656501. The reversal of 1868656499 is 9946568681.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1868656499 - 2⁴ = 1868656483 is a prime.

It is a super-2 number, since 2×1868656499² = 6983754222509874002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1868656429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52034 + ... + 80279.

It is an arithmetic number, because the mean of its divisors is an integer number (242134620).

Almost surely, 2^1868656499 is an apocalyptic number.

1868656499 is a deficient number, since it is larger than the sum of its proper divisors (68420461).

1868656499 is a wasteful number, since it uses less digits than its factorization.

1868656499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132829.

The product of its digits is 22394880, while the sum is 62.

The square root of 1868656499 is about 43227.9596904596. The cubic root of 1868656499 is about 1231.7138509670.

The spelling of 1868656499 in words is "one billion, eight hundred sixty-eight million, six hundred fifty-six thousand, four hundred ninety-nine".