3688412491 has 4 divisors (see below), whose sum is σ = 3691257592. Its totient is φ = 3685567392.

The previous prime is 3688412489. The next prime is 3688412501. The reversal of 3688412491 is 1942148863.

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 3688412491 - 2¹ = 3688412489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688412401) 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, 1420605 + ... + 1423198.

It is an arithmetic number, because the mean of its divisors is an integer number (922814398).

Almost surely, 2^3688412491 is an apocalyptic number.

3688412491 is a deficient number, since it is larger than the sum of its proper divisors (2845101).

3688412491 is a wasteful number, since it uses less digits than its factorization.

3688412491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845100.

The product of its digits is 331776, while the sum is 46.

The square root of 3688412491 is about 60732.3018747026. The cubic root of 3688412491 is about 1545.0640751521.

The spelling of 3688412491 in words is "three billion, six hundred eighty-eight million, four hundred twelve thousand, four hundred ninety-one".