19149945413 has 8 divisors (see below), whose sum is σ = 19205514720. Its totient is φ = 19094423920.

The previous prime is 19149945379. The next prime is 19149945439. The reversal of 19149945413 is 31454994191.

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 19149945413 - 2²⁸ = 18881509957 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 (19149945313) 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, 886406 + ... + 907752.

It is an arithmetic number, because the mean of its divisors is an integer number (2400689340).

Almost surely, 2^19149945413 is an apocalyptic number.

It is an amenable number.

19149945413 is a deficient number, since it is larger than the sum of its proper divisors (55569307).

19149945413 is a wasteful number, since it uses less digits than its factorization.

19149945413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23907.

The product of its digits is 699840, while the sum is 50.

The spelling of 19149945413 in words is "nineteen billion, one hundred forty-nine million, nine hundred forty-five thousand, four hundred thirteen".