36891481 has 8 divisors (see below), whose sum is σ = 40356000. Its totient is φ = 33445440.

The previous prime is 36891443. The next prime is 36891487. The reversal of 36891481 is 18419863.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 36891481 - 2¹³ = 36883289 is a prime.

It is a super-2 number, since 2×36891481² = 2721962740746722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36891487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 256 + ... + 8593.

It is an arithmetic number, because the mean of its divisors is an integer number (5044500).

Almost surely, 2^36891481 is an apocalyptic number.

It is an amenable number.

36891481 is a deficient number, since it is larger than the sum of its proper divisors (3464519).

36891481 is a wasteful number, since it uses less digits than its factorization.

36891481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9239.

The product of its digits is 41472, while the sum is 40.

The square root of 36891481 is about 6073.8357732161. The cubic root of 36891481 is about 332.8960919329.

The spelling of 36891481 in words is "thirty-six million, eight hundred ninety-one thousand, four hundred eighty-one".