189011233 has 2 divisors, whose sum is σ = 189011234. Its totient is φ = 189011232.

The previous prime is 189011209. The next prime is 189011237. The reversal of 189011233 is 332110981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186377104 + 2634129 = 13652^2 + 1623^2 .

It is a cyclic number.

It is not a de Polignac number, because 189011233 - 2²¹ = 186914081 is a prime.

It is not a weakly prime, because it can be changed into another prime (189011237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94505616 + 94505617.

It is an arithmetic number, because the mean of its divisors is an integer number (94505617).

Almost surely, 2^189011233 is an apocalyptic number.

It is an amenable number.

189011233 is a deficient number, since it is larger than the sum of its proper divisors (1).

189011233 is an equidigital number, since it uses as much as digits as its factorization.

189011233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 189011233 is about 13748.1356190576. The cubic root of 189011233 is about 573.8907238954.

The spelling of 189011233 in words is "one hundred eighty-nine million, eleven thousand, two hundred thirty-three".