36491538 has 16 divisors (see below), whose sum is σ = 73061280. Its totient is φ = 12150816.

The previous prime is 36491519. The next prime is 36491549. The reversal of 36491538 is 83519463.

It is a junction number, because it is equal to n+sod(n) for n = 36491496 and 36491505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4081 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (4566330).

Almost surely, 2^36491538 is an apocalyptic number.

36491538 is an abundant number, since it is smaller than the sum of its proper divisors (36569742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

36491538 is a wasteful number, since it uses less digits than its factorization.

36491538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6521.

The product of its digits is 77760, while the sum is 39.

The square root of 36491538 is about 6040.8226260999. The cubic root of 36491538 is about 331.6887354602.

The spelling of 36491538 in words is "thirty-six million, four hundred ninety-one thousand, five hundred thirty-eight".