1802838240 has 144 divisors (see below), whose sum is σ = 7031108448. Its totient is φ = 412075008.

The previous prime is 1802838239. The next prime is 1802838241. The reversal of 1802838240 is 428382081.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1802838239) and next prime (1802838241).

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1802838195 and 1802838204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802838241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79347 + ... + 99506.

It is an arithmetic number, because the mean of its divisors is an integer number (48827142).

Almost surely, 2^1802838240 is an apocalyptic number.

1802838240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1802838240 is an abundant number, since it is smaller than the sum of its proper divisors (5228270208).

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

1802838240 is a wasteful number, since it uses less digits than its factorization.

1802838240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178881 (or 178870 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 1802838240 is about 42459.8426751678. The cubic root of 1802838240 is about 1217.0794244343.

The spelling of 1802838240 in words is "one billion, eight hundred two million, eight hundred thirty-eight thousand, two hundred forty".