7640293189 has 2 divisors, whose sum is σ = 7640293190. Its totient is φ = 7640293188.

The previous prime is 7640293183. The next prime is 7640293229. The reversal of 7640293189 is 9813920467.

7640293189 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., 6430436100 + 1209857089 = 80190^2 + 34783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7640293189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7640293183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820146594 + 3820146595.

It is an arithmetic number, because the mean of its divisors is an integer number (3820146595).

Almost surely, 2^7640293189 is an apocalyptic number.

It is an amenable number.

7640293189 is a deficient number, since it is larger than the sum of its proper divisors (1).

7640293189 is an equidigital number, since it uses as much as digits as its factorization.

7640293189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 7640293189 is about 87408.7706640472. The cubic root of 7640293189 is about 1969.5635946581.

The spelling of 7640293189 in words is "seven billion, six hundred forty million, two hundred ninety-three thousand, one hundred eighty-nine".