1538713853 has 2 divisors, whose sum is σ = 1538713854. Its totient is φ = 1538713852.

The previous prime is 1538713831. The next prime is 1538713859. The reversal of 1538713853 is 3583178351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1339706404 + 199007449 = 36602^2 + 14107^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1538713853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1538713859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769356926 + 769356927.

It is an arithmetic number, because the mean of its divisors is an integer number (769356927).

Almost surely, 2^1538713853 is an apocalyptic number.

It is an amenable number.

1538713853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1538713853 is an equidigital number, since it uses as much as digits as its factorization.

1538713853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 302400, while the sum is 44.

The square root of 1538713853 is about 39226.4432876599. The cubic root of 1538713853 is about 1154.4787795837.

The spelling of 1538713853 in words is "one billion, five hundred thirty-eight million, seven hundred thirteen thousand, eight hundred fifty-three".