19087290117 has 72 divisors (see below), whose sum is σ = 34706258496. Its totient is φ = 10432654848.

The previous prime is 19087290029. The next prime is 19087290149. The reversal of 19087290117 is 71109278091.

It is a happy number.

It is not a de Polignac number, because 19087290117 - 2⁷ = 19087289989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19087290017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 239013 + ... + 308709.

It is an arithmetic number, because the mean of its divisors is an integer number (482031368).

Almost surely, 2^19087290117 is an apocalyptic number.

It is an amenable number.

19087290117 is a deficient number, since it is larger than the sum of its proper divisors (15618968379).

19087290117 is an equidigital number, since it uses as much as digits as its factorization.

19087290117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69749 (or 69730 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 45.

The spelling of 19087290117 in words is "nineteen billion, eighty-seven million, two hundred ninety thousand, one hundred seventeen".