189730751 has 16 divisors (see below), whose sum is σ = 228633600. Its totient is φ = 153806688.

The previous prime is 189730721. The next prime is 189730759. The reversal of 189730751 is 157037981.

It is not a de Polignac number, because 189730751 - 2¹⁸ = 189468607 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189730699 and 189730708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189730759) 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 15 ways as a sum of consecutive naturals, for example, 137501 + ... + 138873.

It is an arithmetic number, because the mean of its divisors is an integer number (14289600).

Almost surely, 2^189730751 is an apocalyptic number.

189730751 is a deficient number, since it is larger than the sum of its proper divisors (38902849).

189730751 is a wasteful number, since it uses less digits than its factorization.

189730751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438.

The product of its (nonzero) digits is 52920, while the sum is 41.

The square root of 189730751 is about 13774.2786017998. The cubic root of 189730751 is about 574.6180207831.

The spelling of 189730751 in words is "one hundred eighty-nine million, seven hundred thirty thousand, seven hundred fifty-one".