36821489 has 2 divisors, whose sum is σ = 36821490. Its totient is φ = 36821488.

The previous prime is 36821483. The next prime is 36821509. The reversal of 36821489 is 98412863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36481600 + 339889 = 6040^2 + 583^2 .

It is a cyclic number.

It is not a de Polignac number, because 36821489 - 2⁸ = 36821233 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (36821483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18410744 + 18410745.

It is an arithmetic number, because the mean of its divisors is an integer number (18410745).

Almost surely, 2^36821489 is an apocalyptic number.

It is an amenable number.

36821489 is a deficient number, since it is larger than the sum of its proper divisors (1).

36821489 is an equidigital number, since it uses as much as digits as its factorization.

36821489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 36821489 is about 6068.0712751252. The cubic root of 36821489 is about 332.6854307047.

The spelling of 36821489 in words is "thirty-six million, eight hundred twenty-one thousand, four hundred eighty-nine".