1802279691040 has 96 divisors (see below), whose sum is σ = 4386939404400. Its totient is φ = 699186069504.

The previous prime is 1802279691031. The next prime is 1802279691049. The reversal of 1802279691040 is 401969722081.

It is an interprime number because it is at equal distance from previous prime (1802279691031) and next prime (1802279691049).

It can be written as a sum of positive squares in 8 ways, for example, as 573915335184 + 1228364355856 = 757572^2 + 1108316^2 .

It is not an unprimeable number, because it can be changed into a prime (1802279691049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1366636 + ... + 2339284.

Almost surely, 2^{1802279691040} is an apocalyptic number.

1802279691040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1802279691040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193469702200).

1802279691040 is an abundant number, since it is smaller than the sum of its proper divisors (2584659713360).

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

1802279691040 is a wasteful number, since it uses less digits than its factorization.

1802279691040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973014 (or 973006 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 1802279691040 in words is "one trillion, eight hundred two billion, two hundred seventy-nine million, six hundred ninety-one thousand, forty".