115351993 has 2 divisors, whose sum is σ = 115351994. Its totient is φ = 115351992.

The previous prime is 115351979. The next prime is 115351997. The reversal of 115351993 is 399153511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111239209 + 4112784 = 10547^2 + 2028^2 .

It is a cyclic number.

It is not a de Polignac number, because 115351993 - 2¹³ = 115343801 is a prime.

It is a super-3 number, since 3×115351993³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (115351997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57675996 + 57675997.

It is an arithmetic number, because the mean of its divisors is an integer number (57675997).

Almost surely, 2^115351993 is an apocalyptic number.

It is an amenable number.

115351993 is a deficient number, since it is larger than the sum of its proper divisors (1).

115351993 is an equidigital number, since it uses as much as digits as its factorization.

115351993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18225, while the sum is 37.

The square root of 115351993 is about 10740.2045138815. The cubic root of 115351993 is about 486.7900591497.

The spelling of 115351993 in words is "one hundred fifteen million, three hundred fifty-one thousand, nine hundred ninety-three".