18429591499 has 8 divisors (see below), whose sum is σ = 20110354992. Its totient is φ = 16749719040.

The previous prime is 18429591491. The next prime is 18429591529. The reversal of 18429591499 is 99419592481.

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 18429591499 - 2³ = 18429591491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18429591491) 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, 179134 + ... + 262579.

It is an arithmetic number, because the mean of its divisors is an integer number (2513794374).

Almost surely, 2^18429591499 is an apocalyptic number.

18429591499 is a deficient number, since it is larger than the sum of its proper divisors (1680763493).

18429591499 is a wasteful number, since it uses less digits than its factorization.

18429591499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445517.

The product of its digits is 8398080, while the sum is 61.

The spelling of 18429591499 in words is "eighteen billion, four hundred twenty-nine million, five hundred ninety-one thousand, four hundred ninety-nine".