189819616 has 48 divisors (see below), whose sum is σ = 441836640. Its totient is φ = 78543360.

The previous prime is 189819611. The next prime is 189819647. The reversal of 189819616 is 616918981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 189819616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189819611) 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, 8115 + ... + 21106.

It is an arithmetic number, because the mean of its divisors is an integer number (9204930).

Almost surely, 2^189819616 is an apocalyptic number.

189819616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

189819616 is an abundant number, since it is smaller than the sum of its proper divisors (252017024).

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

189819616 is a wasteful number, since it uses less digits than its factorization.

189819616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29267 (or 29259 counting only the distinct ones).

The product of its digits is 186624, while the sum is 49.

The square root of 189819616 is about 13777.5039829426. The cubic root of 189819616 is about 574.7077188771.

The spelling of 189819616 in words is "one hundred eighty-nine million, eight hundred nineteen thousand, six hundred sixteen".