1063788999 has 32 divisors (see below), whose sum is σ = 1748081664. Its totient is φ = 560355840.

The previous prime is 1063788977. The next prime is 1063789007. The reversal of 1063788999 is 9998873601.

It is not a de Polignac number, because 1063788999 - 2⁸ = 1063788743 is a prime.

It is a super-2 number, since 2×1063788999² = 2263294068786844002, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1063788919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 238302 + ... + 242724.

It is an arithmetic number, because the mean of its divisors is an integer number (54627552).

Almost surely, 2^1063788999 is an apocalyptic number.

1063788999 is a deficient number, since it is larger than the sum of its proper divisors (684292665).

1063788999 is a wasteful number, since it uses less digits than its factorization.

1063788999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327.

The product of its (nonzero) digits is 5878656, while the sum is 60.

The square root of 1063788999 is about 32615.7783748909. The cubic root of 1063788999 is about 1020.8262557281.

The spelling of 1063788999 in words is "one billion, sixty-three million, seven hundred eighty-eight thousand, nine hundred ninety-nine".