190198693 has 2 divisors, whose sum is σ = 190198694. Its totient is φ = 190198692.

The previous prime is 190198663. The next prime is 190198699. The reversal of 190198693 is 396891091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116273089 + 73925604 = 10783^2 + 8598^2 .

It is a cyclic number.

It is not a de Polignac number, because 190198693 - 2²¹ = 188101541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190198699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95099346 + 95099347.

It is an arithmetic number, because the mean of its divisors is an integer number (95099347).

Almost surely, 2^190198693 is an apocalyptic number.

It is an amenable number.

190198693 is a deficient number, since it is larger than the sum of its proper divisors (1).

190198693 is an equidigital number, since it uses as much as digits as its factorization.

190198693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 190198693 is about 13791.2542214260. The cubic root of 190198693 is about 575.0900355546.

The spelling of 190198693 in words is "one hundred ninety million, one hundred ninety-eight thousand, six hundred ninety-three".