189020715 has 32 divisors (see below), whose sum is σ = 328722240. Its totient is φ = 92192256.

The previous prime is 189020659. The next prime is 189020717. The reversal of 189020715 is 517020981.

It is not a de Polignac number, because 189020715 - 2⁹ = 189020203 is a prime.

It is a super-2 number, since 2×189020715² = 71457661398222450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189020717) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16809 + ... + 25701.

It is an arithmetic number, because the mean of its divisors is an integer number (10272570).

Almost surely, 2^189020715 is an apocalyptic number.

189020715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

189020715 is a deficient number, since it is larger than the sum of its proper divisors (139701525).

189020715 is a wasteful number, since it uses less digits than its factorization.

189020715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9023.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 189020715 is about 13748.4804614910. The cubic root of 189020715 is about 573.9003203988.

The spelling of 189020715 in words is "one hundred eighty-nine million, twenty thousand, seven hundred fifteen".