36494481491 has 4 divisors (see below), whose sum is σ = 39301749312. Its totient is φ = 33687213672.

The previous prime is 36494481433. The next prime is 36494481493. The reversal of 36494481491 is 19418449463.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 36494481491 - 2¹⁰ = 36494480467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36494481493) 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, 1403633891 + ... + 1403633916.

It is an arithmetic number, because the mean of its divisors is an integer number (9825437328).

Almost surely, 2^36494481491 is an apocalyptic number.

36494481491 is a deficient number, since it is larger than the sum of its proper divisors (2807267821).

36494481491 is a wasteful number, since it uses less digits than its factorization.

36494481491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2807267820.

The product of its digits is 2985984, while the sum is 53.

The spelling of 36494481491 in words is "thirty-six billion, four hundred ninety-four million, four hundred eighty-one thousand, four hundred ninety-one".