1802117440 has 56 divisors (see below), whose sum is σ = 4294936800. Its totient is φ = 720235008.

The previous prime is 1802117363. The next prime is 1802117441. The reversal of 1802117440 is 447112081.

It is a junction number, because it is equal to n+sod(n) for n = 1802117399 and 1802117408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802117441) 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, 670339 + ... + 673021.

It is an arithmetic number, because the mean of its divisors is an integer number (76695300).

Almost surely, 2^1802117440 is an apocalyptic number.

1802117440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1802117440 is an abundant number, since it is smaller than the sum of its proper divisors (2492819360).

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

1802117440 is a wasteful number, since it uses less digits than its factorization.

1802117440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799 (or 4789 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 1802117440 is about 42451.3538064453. The cubic root of 1802117440 is about 1216.9172010078.

The spelling of 1802117440 in words is "one billion, eight hundred two million, one hundred seventeen thousand, four hundred forty".