1802323420 has 24 divisors (see below), whose sum is σ = 3830483664. Its totient is φ = 712242816.

The previous prime is 1802323409. The next prime is 1802323423. The reversal of 1802323420 is 243232081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802323423) 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, 541209 + ... + 544528.

It is an arithmetic number, because the mean of its divisors is an integer number (159603486).

Almost surely, 2^1802323420 is an apocalyptic number.

1802323420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1802323420 is an abundant number, since it is smaller than the sum of its proper divisors (2028160244).

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

1802323420 is a wasteful number, since it uses less digits than its factorization.

1802323420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085829 (or 1085827 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1802323420 is about 42453.7798081631. The cubic root of 1802323420 is about 1216.9635633314.

The spelling of 1802323420 in words is "one billion, eight hundred two million, three hundred twenty-three thousand, four hundred twenty".