36491481 has 24 divisors (see below), whose sum is σ = 57706376. Its totient is φ = 22083840.

The previous prime is 36491479. The next prime is 36491519. The reversal of 36491481 is 18419463.

36491481 is a `hidden beast` number, since 3 + 649 + 1 + 4 + 8 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 6843456 + 29648025 = 2616^2 + 5445^2 .

It is not a de Polignac number, because 36491481 - 2¹ = 36491479 is a prime.

It is a super-2 number, since 2×36491481² = 2663256371146722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (36491431) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4581 + ... + 9693.

Almost surely, 2^36491481 is an apocalyptic number.

It is an amenable number.

36491481 is a deficient number, since it is larger than the sum of its proper divisors (21214895).

36491481 is a wasteful number, since it uses less digits than its factorization.

36491481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193 (or 5190 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 36491481 is about 6040.8179081975. The cubic root of 36491481 is about 331.6885627602.

The spelling of 36491481 in words is "thirty-six million, four hundred ninety-one thousand, four hundred eighty-one".