190097861693 has 2 divisors, whose sum is σ = 190097861694. Its totient is φ = 190097861692.

The previous prime is 190097861687. The next prime is 190097861797. The reversal of 190097861693 is 396168790091.

190097861693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154459218169 + 35638643524 = 393013^2 + 188782^2 .

It is an emirp because it is prime and its reverse (396168790091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 190097861693 - 2⁴ = 190097861677 is a prime.

It is a super-2 number, since 2×190097861693² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190097861293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95048930846 + 95048930847.

It is an arithmetic number, because the mean of its divisors is an integer number (95048930847).

Almost surely, 2^190097861693 is an apocalyptic number.

It is an amenable number.

190097861693 is a deficient number, since it is larger than the sum of its proper divisors (1).

190097861693 is an equidigital number, since it uses as much as digits as its factorization.

190097861693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4408992, while the sum is 59.

The spelling of 190097861693 in words is "one hundred ninety billion, ninety-seven million, eight hundred sixty-one thousand, six hundred ninety-three".