19098172212 has 24 divisors (see below), whose sum is σ = 50928459456. Its totient is φ = 5456620608.

The previous prime is 19098172073. The next prime is 19098172217. The reversal of 19098172212 is 21227189091.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19098172217) 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, 113679513 + ... + 113679680.

It is an arithmetic number, because the mean of its divisors is an integer number (2122019144).

Almost surely, 2^19098172212 is an apocalyptic number.

19098172212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19098172212 is an abundant number, since it is smaller than the sum of its proper divisors (31830287244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19098172212 is a wasteful number, since it uses less digits than its factorization.

19098172212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227359207 (or 227359205 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The spelling of 19098172212 in words is "nineteen billion, ninety-eight million, one hundred seventy-two thousand, two hundred twelve".