189881496 has 160 divisors (see below), whose sum is σ = 623256480. Its totient is φ = 52876800.

The previous prime is 189881467. The next prime is 189881501. The reversal of 189881496 is 694188981.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 185466 + ... + 186486.

It is an arithmetic number, because the mean of its divisors is an integer number (3895353).

Almost surely, 2^189881496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189881496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311628240).

189881496 is an abundant number, since it is smaller than the sum of its proper divisors (433374984).

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

189881496 is a wasteful number, since it uses less digits than its factorization.

189881496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087 (or 1074 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 189881496 is about 13779.7494897404. The cubic root of 189881496 is about 574.7701624585.

The spelling of 189881496 in words is "one hundred eighty-nine million, eight hundred eighty-one thousand, four hundred ninety-six".