20189381460 has 48 divisors (see below), whose sum is σ = 56549368512. Its totient is φ = 5382016000.

The previous prime is 20189381453. The next prime is 20189381477. The reversal of 20189381460 is 6418398102.

It is a super-2 number, since 2×20189381460² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127135 + ... + 237785.

It is an arithmetic number, because the mean of its divisors is an integer number (1178111844).

Almost surely, 2^20189381460 is an apocalyptic number.

20189381460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20189381460 is an abundant number, since it is smaller than the sum of its proper divisors (36359987052).

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

20189381460 is a wasteful number, since it uses less digits than its factorization.

20189381460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113704 (or 113702 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 20189381460 in words is "twenty billion, one hundred eighty-nine million, three hundred eighty-one thousand, four hundred sixty".