1023119999 has 16 divisors (see below), whose sum is σ = 1194149760. Its totient is φ = 866700000.

The previous prime is 1023119987. The next prime is 1023120019. The reversal of 1023119999 is 9999113201.

It is a cyclic number.

It is not a de Polignac number, because 1023119999 - 2¹² = 1023115903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023119099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27377 + ... + 52874.

It is an arithmetic number, because the mean of its divisors is an integer number (74634360).

Almost surely, 2^1023119999 is an apocalyptic number.

1023119999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1023119999 is a deficient number, since it is larger than the sum of its proper divisors (171029761).

1023119999 is a wasteful number, since it uses less digits than its factorization.

1023119999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80342.

The product of its (nonzero) digits is 39366, while the sum is 44.

The square root of 1023119999 is about 31986.2470289967. The cubic root of 1023119999 is about 1007.6480249312.

The spelling of 1023119999 in words is "one billion, twenty-three million, one hundred nineteen thousand, nine hundred ninety-nine".