1045806139 has 8 divisors (see below), whose sum is σ = 1223002880. Its totient is φ = 875558376.

The previous prime is 1045806133. The next prime is 1045806163. The reversal of 1045806139 is 9316085401.

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

It is not a de Polignac number, because 1045806139 - 2¹⁵ = 1045773371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1045806098 and 1045806107.

It is not an unprimeable number, because it can be changed into a prime (1045806133) 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 7 ways as a sum of consecutive naturals, for example, 1736919 + ... + 1737520.

It is an arithmetic number, because the mean of its divisors is an integer number (152875360).

Almost surely, 2^1045806139 is an apocalyptic number.

1045806139 is a deficient number, since it is larger than the sum of its proper divisors (177196741).

1045806139 is an equidigital number, since it uses as much as digits as its factorization.

1045806139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474489.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 1045806139 is about 32338.9260644196. The cubic root of 1045806139 is about 1015.0413368590.

The spelling of 1045806139 in words is "one billion, forty-five million, eight hundred six thousand, one hundred thirty-nine".