189701433251 has 4 divisors (see below), whose sum is σ = 206947018104. Its totient is φ = 172455848400.

The previous prime is 189701433227. The next prime is 189701433253. The reversal of 189701433251 is 152334107981.

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

It is not a de Polignac number, because 189701433251 - 2¹⁴ = 189701416867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189701433253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8622792410 + ... + 8622792431.

It is an arithmetic number, because the mean of its divisors is an integer number (51736754526).

Almost surely, 2^189701433251 is an apocalyptic number.

189701433251 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

189701433251 is a deficient number, since it is larger than the sum of its proper divisors (17245584853).

189701433251 is a wasteful number, since it uses less digits than its factorization.

189701433251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17245584852.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 189701433251 in words is "one hundred eighty-nine billion, seven hundred one million, four hundred thirty-three thousand, two hundred fifty-one".