19109801148 has 24 divisors (see below), whose sum is σ = 44618703360. Its totient is φ = 6365766960.

The previous prime is 19109801147. The next prime is 19109801177. The reversal of 19109801148 is 84110890191.

It is a happy number.

It is a super-2 number, since 2×19109801148² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19109801147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 501708 + ... + 538451.

It is an arithmetic number, because the mean of its divisors is an integer number (1859112640).

Almost surely, 2^19109801148 is an apocalyptic number.

It is an amenable number.

19109801148 is an abundant number, since it is smaller than the sum of its proper divisors (25508902212).

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

19109801148 is a wasteful number, since it uses less digits than its factorization.

19109801148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041697 (or 1041695 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 42.

The spelling of 19109801148 in words is "nineteen billion, one hundred nine million, eight hundred one thousand, one hundred forty-eight".