7940188033 has 2 divisors, whose sum is σ = 7940188034. Its totient is φ = 7940188032.

The previous prime is 7940188013. The next prime is 7940188099. The reversal of 7940188033 is 3308810497.

It is a happy number.

7940188033 is digitally balanced in base 3, 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., 6186923649 + 1753264384 = 78657^2 + 41872^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7940188033 is a prime.

It is not a weakly prime, because it can be changed into another prime (7940188013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3970094016 + 3970094017.

It is an arithmetic number, because the mean of its divisors is an integer number (3970094017).

Almost surely, 2^7940188033 is an apocalyptic number.

It is an amenable number.

7940188033 is a deficient number, since it is larger than the sum of its proper divisors (1).

7940188033 is an equidigital number, since it uses as much as digits as its factorization.

7940188033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 7940188033 is about 89107.7327340338. The cubic root of 7940188033 is about 1995.0031957872.

The spelling of 7940188033 in words is "seven billion, nine hundred forty million, one hundred eighty-eight thousand, thirty-three".