189816629 has 8 divisors (see below), whose sum is σ = 199692000. Its totient is φ = 180163312.

The previous prime is 189816617. The next prime is 189816647. The reversal of 189816629 is 926618981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189816629 - 2¹² = 189812533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189815629) 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, 53759 + ... + 57180.

It is an arithmetic number, because the mean of its divisors is an integer number (24961500).

Almost surely, 2^189816629 is an apocalyptic number.

It is an amenable number.

189816629 is a deficient number, since it is larger than the sum of its proper divisors (9875371).

189816629 is a wasteful number, since it uses less digits than its factorization.

189816629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111027.

The product of its digits is 373248, while the sum is 50.

The square root of 189816629 is about 13777.3955811685. The cubic root of 189816629 is about 574.7047043292.

The spelling of 189816629 in words is "one hundred eighty-nine million, eight hundred sixteen thousand, six hundred twenty-nine".