189396736723 has 8 divisors (see below), whose sum is σ = 194848866576. Its totient is φ = 183984259200.

The previous prime is 189396736699. The next prime is 189396736729. The reversal of 189396736723 is 327637693981.

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

It is a cyclic number.

It is not a de Polignac number, because 189396736723 - 2¹³ = 189396728531 is a prime.

It is a super-2 number, since 2×189396736723² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189396736729) 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, 9903393 + ... + 9922498.

It is an arithmetic number, because the mean of its divisors is an integer number (24356108322).

Almost surely, 2^189396736723 is an apocalyptic number.

189396736723 is a deficient number, since it is larger than the sum of its proper divisors (5452129853).

189396736723 is a wasteful number, since it uses less digits than its factorization.

189396736723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19826165.

The product of its digits is 61725888, while the sum is 64.

The spelling of 189396736723 in words is "one hundred eighty-nine billion, three hundred ninety-six million, seven hundred thirty-six thousand, seven hundred twenty-three".