19100001838212 has 36 divisors (see below), whose sum is σ = 48289533105996. Its totient is φ = 6365484039360.

The previous prime is 19100001838201. The next prime is 19100001838241. The reversal of 19100001838212 is 21283810000191.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9026335236996 + 10073666601216 = 3004386^2 + 3173904^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49105263 + ... + 49492694.

It is an arithmetic number, because the mean of its divisors is an integer number (1341375919611).

Almost surely, 2^{19100001838212} is an apocalyptic number.

19100001838212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19100001838212 is an abundant number, since it is smaller than the sum of its proper divisors (29189531267784).

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

19100001838212 is a wasteful number, since it uses less digits than its factorization.

19100001838212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98603348 (or 98603343 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 36.

The spelling of 19100001838212 in words is "nineteen trillion, one hundred billion, one million, eight hundred thirty-eight thousand, two hundred twelve".