1799427243 has 18 divisors (see below), whose sum is σ = 2534123964. Its totient is φ = 1135598688.

The previous prime is 1799427199. The next prime is 1799427251. The reversal of 1799427243 is 3427249971.

It is a happy number.

It is not a de Polignac number, because 1799427243 - 2⁸ = 1799426987 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1799427192 and 1799427201.

It is not an unprimeable number, because it can be changed into a prime (1799420243) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1395343 + ... + 1396631.

Almost surely, 2^1799427243 is an apocalyptic number.

1799427243 is a deficient number, since it is larger than the sum of its proper divisors (734696721).

1799427243 is an frugal number, since it uses more digits than its factorization.

1799427243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2619 (or 1311 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 1799427243 is about 42419.6563281694. The cubic root of 1799427243 is about 1216.3113623247.

Multiplying 1799427243 by its sum of digits (48), we get a square (86372507664 = 293892²).

The spelling of 1799427243 in words is "one billion, seven hundred ninety-nine million, four hundred twenty-seven thousand, two hundred forty-three".