1244432818 has 16 divisors (see below), whose sum is σ = 1937625984. Its totient is φ = 598991760.

The previous prime is 1244432773. The next prime is 1244432831. The reversal of 1244432818 is 8182344421.

It is a super-2 number, since 2×1244432818² = 3097226077030842248, which contains 22 as substring.

It is an unprimeable number.

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, 102780 + ... + 114247.

It is an arithmetic number, because the mean of its divisors is an integer number (121101624).

Almost surely, 2^1244432818 is an apocalyptic number.

1244432818 is a deficient number, since it is larger than the sum of its proper divisors (693193166).

1244432818 is a wasteful number, since it uses less digits than its factorization.

1244432818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217137.

The product of its digits is 49152, while the sum is 37.

The square root of 1244432818 is about 35276.5193577825. The cubic root of 1244432818 is about 1075.6157476181.

The spelling of 1244432818 in words is "one billion, two hundred forty-four million, four hundred thirty-two thousand, eight hundred eighteen".