1802270242 has 4 divisors (see below), whose sum is σ = 2703405366. Its totient is φ = 901135120.

The previous prime is 1802270237. The next prime is 1802270243. The reversal of 1802270242 is 2420722081.

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

It can be written as a sum of positive squares in only one way, i.e., 1555434721 + 246835521 = 39439^2 + 15711^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1802270242.

It is not an unprimeable number, because it can be changed into a prime (1802270243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450567559 + ... + 450567562.

Almost surely, 2^1802270242 is an apocalyptic number.

1802270242 is a deficient number, since it is larger than the sum of its proper divisors (901135124).

1802270242 is an equidigital number, since it uses as much as digits as its factorization.

1802270242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901135123.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 1802270242 is about 42453.1534988863. The cubic root of 1802270242 is about 1216.9515942763.

The spelling of 1802270242 in words is "one billion, eight hundred two million, two hundred seventy thousand, two hundred forty-two".