101188993 has 2 divisors, whose sum is σ = 101188994. Its totient is φ = 101188992.

The previous prime is 101188973. The next prime is 101188999. The reversal of 101188993 is 399881101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53758224 + 47430769 = 7332^2 + 6887^2 .

It is an emirp because it is prime and its reverse (399881101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101188993 is a prime.

It is not a weakly prime, because it can be changed into another prime (101188999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50594496 + 50594497.

It is an arithmetic number, because the mean of its divisors is an integer number (50594497).

Almost surely, 2^101188993 is an apocalyptic number.

It is an amenable number.

101188993 is a deficient number, since it is larger than the sum of its proper divisors (1).

101188993 is an equidigital number, since it uses as much as digits as its factorization.

101188993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 101188993 is about 10059.2739797661. The cubic root of 101188993 is about 465.9912457601.

The spelling of 101188993 in words is "one hundred one million, one hundred eighty-eight thousand, nine hundred ninety-three".