189831226069 has 2 divisors, whose sum is σ = 189831226070. Its totient is φ = 189831226068.

The previous prime is 189831226061. The next prime is 189831226129. The reversal of 189831226069 is 960622138981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132164967025 + 57666259044 = 363545^2 + 240138^2 .

It is a cyclic number.

It is not a de Polignac number, because 189831226069 - 2³ = 189831226061 is a prime.

It is a super-2 number, since 2×189831226069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189831226061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94915613034 + 94915613035.

It is an arithmetic number, because the mean of its divisors is an integer number (94915613035).

Almost surely, 2^189831226069 is an apocalyptic number.

It is an amenable number.

189831226069 is a deficient number, since it is larger than the sum of its proper divisors (1).

189831226069 is an equidigital number, since it uses as much as digits as its factorization.

189831226069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 55.

The spelling of 189831226069 in words is "one hundred eighty-nine billion, eight hundred thirty-one million, two hundred twenty-six thousand, sixty-nine".