1138806807 has 8 divisors (see below), whose sum is σ = 1522235376. Its totient is φ = 757291392.

The previous prime is 1138806803. The next prime is 1138806847. The reversal of 1138806807 is 7086088311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1138806807 - 2² = 1138806803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138806803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476898 + ... + 479279.

It is an arithmetic number, because the mean of its divisors is an integer number (190279422).

Almost surely, 2^1138806807 is an apocalyptic number.

1138806807 is a deficient number, since it is larger than the sum of its proper divisors (383428569).

1138806807 is an equidigital number, since it uses as much as digits as its factorization.

1138806807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956577.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1138806807 is about 33746.2117429498. The cubic root of 1138806807 is about 1044.2793370714.

The spelling of 1138806807 in words is "one billion, one hundred thirty-eight million, eight hundred six thousand, eight hundred seven".