1814143945 has 4 divisors (see below), whose sum is σ = 2176972740. Its totient is φ = 1451315152.

The previous prime is 1814143927. The next prime is 1814143957. The reversal of 1814143945 is 5493414181.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 834516544 + 979627401 = 28888^2 + 31299^2 .

It is a cyclic number.

It is not a de Polignac number, because 1814143945 - 2⁹ = 1814143433 is a prime.

It is a super-2 number, since 2×1814143945² = 6582236506360326050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1814143898 and 1814143907.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181414390 + ... + 181414399.

It is an arithmetic number, because the mean of its divisors is an integer number (544243185).

Almost surely, 2^1814143945 is an apocalyptic number.

It is an amenable number.

1814143945 is a deficient number, since it is larger than the sum of its proper divisors (362828795).

1814143945 is an equidigital number, since it uses as much as digits as its factorization.

1814143945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362828794.

The product of its digits is 69120, while the sum is 40.

The square root of 1814143945 is about 42592.7686937583. The cubic root of 1814143945 is about 1219.6182503972.

The spelling of 1814143945 in words is "one billion, eight hundred fourteen million, one hundred forty-three thousand, nine hundred forty-five".