189952811 has 2 divisors, whose sum is σ = 189952812. Its totient is φ = 189952810.

The previous prime is 189952793. The next prime is 189952817. The reversal of 189952811 is 118259981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189952811 - 2¹⁸ = 189690667 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (189952817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94976405 + 94976406.

It is an arithmetic number, because the mean of its divisors is an integer number (94976406).

Almost surely, 2^189952811 is an apocalyptic number.

189952811 is a deficient number, since it is larger than the sum of its proper divisors (1).

189952811 is an equidigital number, since it uses as much as digits as its factorization.

189952811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 44.

The square root of 189952811 is about 13782.3369208563. The cubic root of 189952811 is about 574.8421101460.

The spelling of 189952811 in words is "one hundred eighty-nine million, nine hundred fifty-two thousand, eight hundred eleven".