189919704 has 64 divisors (see below), whose sum is σ = 514160640. Its totient is φ = 58112640.

The previous prime is 189919679. The next prime is 189919729. The reversal of 189919704 is 407919981.

It is an interprime number because it is at equal distance from previous prime (189919679) and next prime (189919729).

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, 57999 + ... + 61185.

It is an arithmetic number, because the mean of its divisors is an integer number (8033760).

Almost surely, 2^189919704 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 189919704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257080320).

189919704 is an abundant number, since it is smaller than the sum of its proper divisors (324240936).

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

189919704 is a wasteful number, since it uses less digits than its factorization.

189919704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400 (or 3396 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 189919704 is about 13781.1358022479. The cubic root of 189919704 is about 574.8087116694.

The spelling of 189919704 in words is "one hundred eighty-nine million, nine hundred nineteen thousand, seven hundred four".