1845421002 has 16 divisors (see below), whose sum is σ = 4100935680. Its totient is φ = 615140316.

The previous prime is 1845421001. The next prime is 1845421007. The reversal of 1845421002 is 2001245481.

1845421002 is a `hidden beast` number, since 18 + 4 + 542 + 100 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1845421001) 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, 17087178 + ... + 17087285.

It is an arithmetic number, because the mean of its divisors is an integer number (256308480).

Almost surely, 2^1845421002 is an apocalyptic number.

1845421002 is an abundant number, since it is smaller than the sum of its proper divisors (2255514678).

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

1845421002 is a wasteful number, since it uses less digits than its factorization.

1845421002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34174474 (or 34174468 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 1845421002 is about 42958.3635861516. The cubic root of 1845421002 is about 1226.5873637132.

Adding to 1845421002 its reverse (2001245481), we get a palindrome (3846666483).

The spelling of 1845421002 in words is "one billion, eight hundred forty-five million, four hundred twenty-one thousand, two".