3720086491 has 4 divisors (see below), whose sum is σ = 4058276184. Its totient is φ = 3381896800.

The previous prime is 3720086471. The next prime is 3720086501. The reversal of 3720086491 is 1946800273.

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 3720086491 - 2¹¹ = 3720084443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3720086411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169094830 + ... + 169094851.

It is an arithmetic number, because the mean of its divisors is an integer number (1014569046).

Almost surely, 2^3720086491 is an apocalyptic number.

3720086491 is a deficient number, since it is larger than the sum of its proper divisors (338189693).

3720086491 is a wasteful number, since it uses less digits than its factorization.

3720086491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338189692.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 3720086491 is about 60992.5117616909. The cubic root of 3720086491 is about 1549.4741873768.

The spelling of 3720086491 in words is "three billion, seven hundred twenty million, eighty-six thousand, four hundred ninety-one".