195700993 has 4 divisors (see below), whose sum is σ = 198909268. Its totient is φ = 192492720.

The previous prime is 195700937. The next prime is 195701003. The reversal of 195700993 is 399007591.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 78021889 + 117679104 = 8833^2 + 10848^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195700993 is a prime.

It is a super-2 number, since 2×195700993² = 76597757322372098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195700693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604046 + ... + 1604167.

It is an arithmetic number, because the mean of its divisors is an integer number (49727317).

Almost surely, 2^195700993 is an apocalyptic number.

It is an amenable number.

195700993 is a deficient number, since it is larger than the sum of its proper divisors (3208275).

195700993 is an equidigital number, since it uses as much as digits as its factorization.

195700993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3208274.

The product of its (nonzero) digits is 76545, while the sum is 43.

The square root of 195700993 is about 13989.3171027038. The cubic root of 195700993 is about 580.5830373753.

The spelling of 195700993 in words is "one hundred ninety-five million, seven hundred thousand, nine hundred ninety-three".