7493111993 has 2 divisors, whose sum is σ = 7493111994. Its totient is φ = 7493111992.

The previous prime is 7493111953. The next prime is 7493112013. The reversal of 7493111993 is 3991113947.

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., 7487094784 + 6017209 = 86528^2 + 2453^2 .

It is a cyclic number.

It is not a de Polignac number, because 7493111993 - 2⁶ = 7493111929 is a prime.

It is a super-2 number, since 2×7493111993² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7493111933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3746555996 + 3746555997.

It is an arithmetic number, because the mean of its divisors is an integer number (3746555997).

Almost surely, 2^7493111993 is an apocalyptic number.

It is an amenable number.

7493111993 is a deficient number, since it is larger than the sum of its proper divisors (1).

7493111993 is an equidigital number, since it uses as much as digits as its factorization.

7493111993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 183708, while the sum is 47.

The square root of 7493111993 is about 86562.7633165670. The cubic root of 7493111993 is about 1956.8344006951.

The spelling of 7493111993 in words is "seven billion, four hundred ninety-three million, one hundred eleven thousand, nine hundred ninety-three".