19109291088 has 40 divisors (see below), whose sum is σ = 51067936800. Its totient is φ = 6150116224.

The previous prime is 19109291083. The next prime is 19109291101. The reversal of 19109291088 is 88019290191.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19109291083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6862578 + ... + 6865361.

It is an arithmetic number, because the mean of its divisors is an integer number (1276698420).

Almost surely, 2^19109291088 is an apocalyptic number.

It is an amenable number.

19109291088 is an abundant number, since it is smaller than the sum of its proper divisors (31958645712).

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

19109291088 is a wasteful number, since it uses less digits than its factorization.

19109291088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13727979 (or 13727973 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 48.

The spelling of 19109291088 in words is "nineteen billion, one hundred nine million, two hundred ninety-one thousand, eighty-eight".