1018475481820 has 48 divisors (see below), whose sum is σ = 2266368037920. Its totient is φ = 383128438784.

The previous prime is 1018475481809. The next prime is 1018475481833. The reversal of 1018475481820 is 281845748101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 723694 + ... + 1600213.

It is an arithmetic number, because the mean of its divisors is an integer number (47216000790).

Almost surely, 2^{1018475481820} is an apocalyptic number.

1018475481820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1018475481820 is an abundant number, since it is smaller than the sum of its proper divisors (1247892556100).

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

1018475481820 is a wasteful number, since it uses less digits than its factorization.

1018475481820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325222 (or 2325220 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 49.

The spelling of 1018475481820 in words is "one trillion, eighteen billion, four hundred seventy-five million, four hundred eighty-one thousand, eight hundred twenty".