18270963940 has 12 divisors (see below), whose sum is σ = 38369024316. Its totient is φ = 7308385568.

The previous prime is 18270963937. The next prime is 18270963943. The reversal of 18270963940 is 4936907281.

It is an interprime number because it is at equal distance from previous prime (18270963937) and next prime (18270963943).

It can be written as a sum of positive squares in 2 ways, for example, as 9433459876 + 8837504064 = 97126^2 + 94008^2 .

It is not an unprimeable number, because it can be changed into a prime (18270963943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456774079 + ... + 456774118.

It is an arithmetic number, because the mean of its divisors is an integer number (3197418693).

Almost surely, 2^18270963940 is an apocalyptic number.

18270963940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18270963940 is an abundant number, since it is smaller than the sum of its proper divisors (20098060376).

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

18270963940 is a wasteful number, since it uses less digits than its factorization.

18270963940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913548206 (or 913548204 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 18270963940 in words is "eighteen billion, two hundred seventy million, nine hundred sixty-three thousand, nine hundred forty".