1999118529 has 16 divisors (see below), whose sum is σ = 3003373440. Its totient is φ = 1313973360.

The previous prime is 1999118521. The next prime is 1999118551. The reversal of 1999118529 is 9258119991.

1999118529 is a `hidden beast` number, since 19 + 9 + 91 + 18 + 529 = 666.

It is not a de Polignac number, because 1999118529 - 2³ = 1999118521 is a prime.

It is a super-2 number, since 2×1999118529² = 7992949785982247682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1999118521) 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, 519502 + ... + 523335.

It is an arithmetic number, because the mean of its divisors is an integer number (187710840).

Almost surely, 2^1999118529 is an apocalyptic number.

It is an amenable number.

1999118529 is a deficient number, since it is larger than the sum of its proper divisors (1004254911).

1999118529 is a wasteful number, since it uses less digits than its factorization.

1999118529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042917 (or 1042911 counting only the distinct ones).

The product of its digits is 524880, while the sum is 54.

The square root of 1999118529 is about 44711.5033184974. The cubic root of 1999118529 is about 1259.7359253839.

The spelling of 1999118529 in words is "one billion, nine hundred ninety-nine million, one hundred eighteen thousand, five hundred twenty-nine".