189896501 has 2 divisors, whose sum is σ = 189896502. Its totient is φ = 189896500.

The previous prime is 189896491. The next prime is 189896521. The reversal of 189896501 is 105698981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180902500 + 8994001 = 13450^2 + 2999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189896501 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189896521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94948250 + 94948251.

It is an arithmetic number, because the mean of its divisors is an integer number (94948251).

Almost surely, 2^189896501 is an apocalyptic number.

It is an amenable number.

189896501 is a deficient number, since it is larger than the sum of its proper divisors (1).

189896501 is an equidigital number, since it uses as much as digits as its factorization.

189896501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 189896501 is about 13780.2939373585. The cubic root of 189896501 is about 574.7853020750.

The spelling of 189896501 in words is "one hundred eighty-nine million, eight hundred ninety-six thousand, five hundred one".