19290506500 has 24 divisors (see below), whose sum is σ = 42130467288. Its totient is φ = 7716202400.

The previous prime is 19290506461. The next prime is 19290506527. The reversal of 19290506500 is 560509291.

It can be written as a sum of positive squares in 4 ways, for example, as 3408457924 + 15882048576 = 58382^2 + 126024^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19290506500.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 19290007 + ... + 19291006.

It is an arithmetic number, because the mean of its divisors is an integer number (1755436137).

Almost surely, 2^19290506500 is an apocalyptic number.

19290506500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19290506500 is an abundant number, since it is smaller than the sum of its proper divisors (22839960788).

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

19290506500 is a wasteful number, since it uses less digits than its factorization.

19290506500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38581032 (or 38581020 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 37.

The spelling of 19290506500 in words is "nineteen billion, two hundred ninety million, five hundred six thousand, five hundred".