19481535150 has 144 divisors (see below), whose sum is σ = 61311790080. Its totient is φ = 4048094400.

The previous prime is 19481535137. The next prime is 19481535167. The reversal of 19481535150 is 5153518491.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 39630 + ... + 201329.

It is an arithmetic number, because the mean of its divisors is an integer number (425776320).

Almost surely, 2^19481535150 is an apocalyptic number.

19481535150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 19481535150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30655895040).

19481535150 is an abundant number, since it is smaller than the sum of its proper divisors (41830254930).

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

19481535150 is a wasteful number, since it uses less digits than its factorization.

19481535150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240999 (or 240987 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 42.

The spelling of 19481535150 in words is "nineteen billion, four hundred eighty-one million, five hundred thirty-five thousand, one hundred fifty".