538177889 has 2 divisors, whose sum is σ = 538177890. Its totient is φ = 538177888.

The previous prime is 538177883. The next prime is 538177909. The reversal of 538177889 is 988771835.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475894225 + 62283664 = 21815^2 + 7892^2 .

It is a cyclic number.

It is not a de Polignac number, because 538177889 - 2²⁸ = 269742433 is a prime.

It is not a weakly prime, because it can be changed into another prime (538177883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269088944 + 269088945.

It is an arithmetic number, because the mean of its divisors is an integer number (269088945).

Almost surely, 2^538177889 is an apocalyptic number.

It is an amenable number.

538177889 is a deficient number, since it is larger than the sum of its proper divisors (1).

538177889 is an equidigital number, since it uses as much as digits as its factorization.

538177889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 56.

The square root of 538177889 is about 23198.6613622424. The cubic root of 538177889 is about 813.4083324454.

The spelling of 538177889 in words is "five hundred thirty-eight million, one hundred seventy-seven thousand, eight hundred eighty-nine".