36633381 has 4 divisors (see below), whose sum is σ = 48844512. Its totient is φ = 24422252.

The previous prime is 36633361. The next prime is 36633391. The reversal of 36633381 is 18333663.

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: 18333663 = 3 ⋅6111221.

It is a cyclic number.

It is not a de Polignac number, because 36633381 - 2⁷ = 36633253 is a prime.

It is a super-2 number, since 2×36633381² = 2684009206982322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36633301) 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, 6105561 + ... + 6105566.

It is an arithmetic number, because the mean of its divisors is an integer number (12211128).

Almost surely, 2^36633381 is an apocalyptic number.

It is an amenable number.

36633381 is a deficient number, since it is larger than the sum of its proper divisors (12211131).

36633381 is a wasteful number, since it uses less digits than its factorization.

36633381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211130.

The product of its digits is 23328, while the sum is 33.

The square root of 36633381 is about 6052.5516106845. The cubic root of 36633381 is about 332.1179390586.

The spelling of 36633381 in words is "thirty-six million, six hundred thirty-three thousand, three hundred eighty-one".