189656351 has 2 divisors, whose sum is σ = 189656352. Its totient is φ = 189656350.

The previous prime is 189656333. The next prime is 189656377. The reversal of 189656351 is 153656981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189656351 - 2¹⁸ = 189394207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189658351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94828175 + 94828176.

It is an arithmetic number, because the mean of its divisors is an integer number (94828176).

Almost surely, 2^189656351 is an apocalyptic number.

189656351 is a deficient number, since it is larger than the sum of its proper divisors (1).

189656351 is an equidigital number, since it uses as much as digits as its factorization.

189656351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 194400, while the sum is 44.

The square root of 189656351 is about 13771.5776510899. The cubic root of 189656351 is about 574.5429017528.

The spelling of 189656351 in words is "one hundred eighty-nine million, six hundred fifty-six thousand, three hundred fifty-one".