36491985 has 16 divisors (see below), whose sum is σ = 64874880. Its totient is φ = 19462320.

The previous prime is 36491977. The next prime is 36491999. The reversal of 36491985 is 58919463.

It is a happy number.

It is not a de Polignac number, because 36491985 - 2³ = 36491977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 36491985.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135021 + ... + 135290.

It is an arithmetic number, because the mean of its divisors is an integer number (4054680).

Almost surely, 2^36491985 is an apocalyptic number.

It is an amenable number.

36491985 is a deficient number, since it is larger than the sum of its proper divisors (28382895).

36491985 is a wasteful number, since it uses less digits than its factorization.

36491985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270325 (or 270319 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 36491985 is about 6040.8596242588. The cubic root of 36491985 is about 331.6900897857.

The spelling of 36491985 in words is "thirty-six million, four hundred ninety-one thousand, nine hundred eighty-five".