190866733 has 2 divisors, whose sum is σ = 190866734. Its totient is φ = 190866732.

The previous prime is 190866713. The next prime is 190866737. The reversal of 190866733 is 337668091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116165284 + 74701449 = 10778^2 + 8643^2 .

It is a cyclic number.

It is not a de Polignac number, because 190866733 - 2²⁵ = 157312301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190866733.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190866737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95433366 + 95433367.

It is an arithmetic number, because the mean of its divisors is an integer number (95433367).

Almost surely, 2^190866733 is an apocalyptic number.

It is an amenable number.

190866733 is a deficient number, since it is larger than the sum of its proper divisors (1).

190866733 is an equidigital number, since it uses as much as digits as its factorization.

190866733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 190866733 is about 13815.4526889277. The cubic root of 190866733 is about 575.7625502192.

The spelling of 190866733 in words is "one hundred ninety million, eight hundred sixty-six thousand, seven hundred thirty-three".