189520703 has 4 divisors (see below), whose sum is σ = 191013120. Its totient is φ = 188028288.

The previous prime is 189520679. The next prime is 189520729. The reversal of 189520703 is 307025981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189520703 is a prime.

It is a super-2 number, since 2×189520703² = 71836193731228418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189520733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 746018 + ... + 746271.

It is an arithmetic number, because the mean of its divisors is an integer number (47753280).

Almost surely, 2^189520703 is an apocalyptic number.

189520703 is a deficient number, since it is larger than the sum of its proper divisors (1492417).

189520703 is a wasteful number, since it uses less digits than its factorization.

189520703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492416.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 189520703 is about 13766.6518442212. The cubic root of 189520703 is about 574.4058922210.

The spelling of 189520703 in words is "one hundred eighty-nine million, five hundred twenty thousand, seven hundred three".