1538795653 has 2 divisors, whose sum is σ = 1538795654. Its totient is φ = 1538795652.

The previous prime is 1538795591. The next prime is 1538795677. The reversal of 1538795653 is 3565978351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 807525889 + 731269764 = 28417^2 + 27042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1538795653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1538795653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538795683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769397826 + 769397827.

It is an arithmetic number, because the mean of its divisors is an integer number (769397827).

Almost surely, 2^1538795653 is an apocalyptic number.

It is an amenable number.

1538795653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538795653 is an equidigital number, since it uses as much as digits as its factorization.

1538795653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402000, while the sum is 52.

The square root of 1538795653 is about 39227.4859377962. The cubic root of 1538795653 is about 1154.4992370783.

The spelling of 1538795653 in words is "one billion, five hundred thirty-eight million, seven hundred ninety-five thousand, six hundred fifty-three".