19836492149 has 8 divisors (see below), whose sum is σ = 20139369600. Its totient is φ = 19533815136.

The previous prime is 19836492131. The next prime is 19836492191. The reversal of 19836492149 is 94129463891.

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 19836492149 - 2²⁸ = 19568056693 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19836492094 and 19836492103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19836492199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155732 + ... + 252834.

It is an arithmetic number, because the mean of its divisors is an integer number (2517421200).

Almost surely, 2^19836492149 is an apocalyptic number.

It is an amenable number.

19836492149 is a deficient number, since it is larger than the sum of its proper divisors (302877451).

19836492149 is an equidigital number, since it uses as much as digits as its factorization.

19836492149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100219.

The product of its digits is 3359232, while the sum is 56.

The spelling of 19836492149 in words is "nineteen billion, eight hundred thirty-six million, four hundred ninety-two thousand, one hundred forty-nine".