19991149359 has 8 divisors (see below), whose sum is σ = 26802130992. Its totient is φ = 13253800320.

The previous prime is 19991149357. The next prime is 19991149379. The reversal of 19991149359 is 95394119991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19991149359 - 2¹ = 19991149357 is a prime.

It is a super-2 number, since 2×19991149359² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19991149357) 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, 18407514 + ... + 18408599.

It is an arithmetic number, because the mean of its divisors is an integer number (3350266374).

Almost surely, 2^19991149359 is an apocalyptic number.

19991149359 is a deficient number, since it is larger than the sum of its proper divisors (6810981633).

19991149359 is a wasteful number, since it uses less digits than its factorization.

19991149359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36816297.

The product of its digits is 3542940, while the sum is 60.

The spelling of 19991149359 in words is "nineteen billion, nine hundred ninety-one million, one hundred forty-nine thousand, three hundred fifty-nine".