1820272602 has 16 divisors (see below), whose sum is σ = 3702250080. Its totient is φ = 596473392.

The previous prime is 1820272577. The next prime is 1820272607. The reversal of 1820272602 is 2062720281.

It is a self number, because there is not a number n which added to its sum of digits gives 1820272602.

It is not an unprimeable number, because it can be changed into a prime (1820272607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2570653 + ... + 2571360.

It is an arithmetic number, because the mean of its divisors is an integer number (231390630).

Almost surely, 2^1820272602 is an apocalyptic number.

1820272602 is an abundant number, since it is smaller than the sum of its proper divisors (1881977478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1820272602 is a wasteful number, since it uses less digits than its factorization.

1820272602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5142077.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 1820272602 is about 42664.6528404955. The cubic root of 1820272602 is about 1220.9901041630.

Adding to 1820272602 its reverse (2062720281), we get a palindrome (3882992883).

The spelling of 1820272602 in words is "one billion, eight hundred twenty million, two hundred seventy-two thousand, six hundred two".