190969693 has 2 divisors, whose sum is σ = 190969694. Its totient is φ = 190969692.

The previous prime is 190969673. The next prime is 190969699. The reversal of 190969693 is 396969091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189943524 + 1026169 = 13782^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 190969693 - 2¹³ = 190961501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 190969693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190969699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95484846 + 95484847.

It is an arithmetic number, because the mean of its divisors is an integer number (95484847).

Almost surely, 2^190969693 is an apocalyptic number.

It is an amenable number.

190969693 is a deficient number, since it is larger than the sum of its proper divisors (1).

190969693 is an equidigital number, since it uses as much as digits as its factorization.

190969693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 708588, while the sum is 52.

The square root of 190969693 is about 13819.1784488080. The cubic root of 190969693 is about 575.8660602357.

The spelling of 190969693 in words is "one hundred ninety million, nine hundred sixty-nine thousand, six hundred ninety-three".