7149881653 has 2 divisors, whose sum is σ = 7149881654. Its totient is φ = 7149881652.

The previous prime is 7149881639. The next prime is 7149881731. The reversal of 7149881653 is 3561889417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3813433009 + 3336448644 = 61753^2 + 57762^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7149881653 is a prime.

It is a super-2 number, since 2×7149881653² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7149881653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7149881623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3574940826 + 3574940827.

It is an arithmetic number, because the mean of its divisors is an integer number (3574940827).

Almost surely, 2^7149881653 is an apocalyptic number.

It is an amenable number.

7149881653 is a deficient number, since it is larger than the sum of its proper divisors (1).

7149881653 is an equidigital number, since it uses as much as digits as its factorization.

7149881653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 52.

The square root of 7149881653 is about 84556.9728230617. The cubic root of 7149881653 is about 1926.4878947396.

The spelling of 7149881653 in words is "seven billion, one hundred forty-nine million, eight hundred eighty-one thousand, six hundred fifty-three".