233148389 has 2 divisors, whose sum is σ = 233148390. Its totient is φ = 233148388.

The previous prime is 233148367. The next prime is 233148437. The reversal of 233148389 is 983841332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 233020225 + 128164 = 15265^2 + 358^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233148389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233148089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116574194 + 116574195.

It is an arithmetic number, because the mean of its divisors is an integer number (116574195).

Almost surely, 2^233148389 is an apocalyptic number.

It is an amenable number.

233148389 is a deficient number, since it is larger than the sum of its proper divisors (1).

233148389 is an equidigital number, since it uses as much as digits as its factorization.

233148389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 233148389 is about 15269.1973921356. The cubic root of 233148389 is about 615.4755517190.

The spelling of 233148389 in words is "two hundred thirty-three million, one hundred forty-eight thousand, three hundred eighty-nine".