1814724745 has 8 divisors (see below), whose sum is σ = 2178724680. Its totient is φ = 1451076480.

The previous prime is 1814724731. The next prime is 1814724749. The reversal of 1814724745 is 5474274181.

It can be written as a sum of positive squares in 4 ways, for example, as 354644224 + 1460080521 = 18832^2 + 38211^2 .

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

It is not a de Polignac number, because 1814724745 - 2⁷ = 1814724617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1814724749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76426 + ... + 97315.

It is an arithmetic number, because the mean of its divisors is an integer number (272340585).

Almost surely, 2^1814724745 is an apocalyptic number.

It is an amenable number.

1814724745 is a deficient number, since it is larger than the sum of its proper divisors (363999935).

1814724745 is a wasteful number, since it uses less digits than its factorization.

1814724745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175835.

The product of its digits is 250880, while the sum is 43.

The square root of 1814724745 is about 42599.5862069105. The cubic root of 1814724745 is about 1219.7483905113.

The spelling of 1814724745 in words is "one billion, eight hundred fourteen million, seven hundred twenty-four thousand, seven hundred forty-five".