19873002249 has 24 divisors (see below), whose sum is σ = 29487455712. Its totient is φ = 12890142720.

The previous prime is 19873002241. The next prime is 19873002257. The reversal of 19873002249 is 94220037891.

It is an interprime number because it is at equal distance from previous prime (19873002241) and next prime (19873002257).

It is not a de Polignac number, because 19873002249 - 2³ = 19873002241 is a prime.

It is a super-3 number, since 3×19873002249³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19873002241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 447 + ... + 199364.

It is an arithmetic number, because the mean of its divisors is an integer number (1228643988).

Almost surely, 2^19873002249 is an apocalyptic number.

It is an amenable number.

19873002249 is a deficient number, since it is larger than the sum of its proper divisors (9614453463).

19873002249 is a wasteful number, since it uses less digits than its factorization.

19873002249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200117 (or 200114 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The spelling of 19873002249 in words is "nineteen billion, eight hundred seventy-three million, two thousand, two hundred forty-nine".