1808864146 has 8 divisors (see below), whose sum is σ = 2740160844. Its totient is φ = 895477200.

The previous prime is 1808864119. The next prime is 1808864147. The reversal of 1808864146 is 6414688081.

It can be written as a sum of positive squares in 2 ways, for example, as 1743981121 + 64883025 = 41761^2 + 8055^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1808864096 and 1808864105.

It is not an unprimeable number, because it can be changed into a prime (1808864147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4477185 + ... + 4477588.

Almost surely, 2^1808864146 is an apocalyptic number.

1808864146 is a deficient number, since it is larger than the sum of its proper divisors (931296698).

1808864146 is a wasteful number, since it uses less digits than its factorization.

1808864146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8954876.

The product of its (nonzero) digits is 294912, while the sum is 46.

The square root of 1808864146 is about 42530.7435392329. The cubic root of 1808864146 is about 1218.4339275705.

The spelling of 1808864146 in words is "one billion, eight hundred eight million, eight hundred sixty-four thousand, one hundred forty-six".