1539885241 has 2 divisors, whose sum is σ = 1539885242. Its totient is φ = 1539885240.

The previous prime is 1539885223. The next prime is 1539885247. The reversal of 1539885241 is 1425889351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1415339641 + 124545600 = 37621^2 + 11160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1539885241 - 2¹¹ = 1539883193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1539885191 and 1539885200.

It is not a weakly prime, because it can be changed into another prime (1539885247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769942620 + 769942621.

It is an arithmetic number, because the mean of its divisors is an integer number (769942621).

Almost surely, 2^1539885241 is an apocalyptic number.

It is an amenable number.

1539885241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1539885241 is an equidigital number, since it uses as much as digits as its factorization.

1539885241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 46.

The square root of 1539885241 is about 39241.3715484054. The cubic root of 1539885241 is about 1154.7716647882.

The spelling of 1539885241 in words is "one billion, five hundred thirty-nine million, eight hundred eighty-five thousand, two hundred forty-one".