36818389 has 2 divisors, whose sum is σ = 36818390. Its totient is φ = 36818388.

The previous prime is 36818351. The next prime is 36818393. The reversal of 36818389 is 98381863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 119025 = 6058^2 + 345^2 .

It is an emirp because it is prime and its reverse (98381863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36818389 - 2¹³ = 36810197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36818329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18409194 + 18409195.

It is an arithmetic number, because the mean of its divisors is an integer number (18409195).

Almost surely, 2^36818389 is an apocalyptic number.

It is an amenable number.

36818389 is a deficient number, since it is larger than the sum of its proper divisors (1).

36818389 is an equidigital number, since it uses as much as digits as its factorization.

36818389 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 36818389 is about 6067.8158343839. The cubic root of 36818389 is about 332.6760941840.

The spelling of 36818389 in words is "thirty-six million, eight hundred eighteen thousand, three hundred eighty-nine".