36398881 has 2 divisors, whose sum is σ = 36398882. Its totient is φ = 36398880.

The previous prime is 36398849. The next prime is 36398893. The reversal of 36398881 is 18889363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 9979281 = 5140^2 + 3159^2 .

It is a cyclic number.

It is not a de Polignac number, because 36398881 - 2⁵ = 36398849 is a prime.

It is a super-2 number, since 2×36398881² = 2649757076104322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36398801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18199440 + 18199441.

It is an arithmetic number, because the mean of its divisors is an integer number (18199441).

Almost surely, 2^36398881 is an apocalyptic number.

It is an amenable number.

36398881 is a deficient number, since it is larger than the sum of its proper divisors (1).

36398881 is an equidigital number, since it uses as much as digits as its factorization.

36398881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 36398881 is about 6033.1485146646. The cubic root of 36398881 is about 331.4077631800.

The spelling of 36398881 in words is "thirty-six million, three hundred ninety-eight thousand, eight hundred eighty-one".