36821189 has 4 divisors (see below), whose sum is σ = 37287360. Its totient is φ = 36355020.

The previous prime is 36821177. The next prime is 36821219. The reversal of 36821189 is 98112863.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98112863 = 37 ⋅2651699.

It is a cyclic number.

It is not a de Polignac number, because 36821189 - 2⁴ = 36821173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36821089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232967 + ... + 233124.

It is an arithmetic number, because the mean of its divisors is an integer number (9321840).

Almost surely, 2^36821189 is an apocalyptic number.

It is an amenable number.

36821189 is a deficient number, since it is larger than the sum of its proper divisors (466171).

36821189 is an equidigital number, since it uses as much as digits as its factorization.

36821189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466170.

The product of its digits is 20736, while the sum is 38.

The square root of 36821189 is about 6068.0465555234. The cubic root of 36821189 is about 332.6845271933.

The spelling of 36821189 in words is "thirty-six million, eight hundred twenty-one thousand, one hundred eighty-nine".