3808643091 has 16 divisors (see below), whose sum is σ = 5564697600. Its totient is φ = 2297913120.

The previous prime is 3808642997. The next prime is 3808643101. The reversal of 3808643091 is 1903468083.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-3808643091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3808643591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251416 + ... + 266133.

It is an arithmetic number, because the mean of its divisors is an integer number (347793600).

Almost surely, 2^3808643091 is an apocalyptic number.

3808643091 is a deficient number, since it is larger than the sum of its proper divisors (1756054509).

3808643091 is a wasteful number, since it uses less digits than its factorization.

3808643091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517786.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 3808643091 is about 61714.2049369511. The cubic root of 3808643091 is about 1561.6729656842.

The spelling of 3808643091 in words is "three billion, eight hundred eight million, six hundred forty-three thousand, ninety-one".