189964376 has 64 divisors (see below), whose sum is σ = 419904000. Its totient is φ = 80527776.

The previous prime is 189964367. The next prime is 189964403. The reversal of 189964376 is 673469981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293285 + ... + 293931.

It is an arithmetic number, because the mean of its divisors is an integer number (6561000).

Almost surely, 2^189964376 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 189964376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209952000).

189964376 is an abundant number, since it is smaller than the sum of its proper divisors (229939624).

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

189964376 is a wasteful number, since it uses less digits than its factorization.

189964376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 763 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 53.

The square root of 189964376 is about 13782.7564732168. The cubic root of 189964376 is about 574.8537760505.

The spelling of 189964376 in words is "one hundred eighty-nine million, nine hundred sixty-four thousand, three hundred seventy-six".