1881318133350 has 72 divisors (see below), whose sum is σ = 5351796782280. Its totient is φ = 472173960960.

The previous prime is 1881318133339. The next prime is 1881318133421. The reversal of 1881318133350 is 533318131881.

1881318133350 is a `hidden beast` number, since 1 + 88 + 13 + 181 + 33 + 350 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 1881318133296 and 1881318133305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 122954320 + ... + 122969619.

It is an arithmetic number, because the mean of its divisors is an integer number (74330510865).

Almost surely, 2^{1881318133350} is an apocalyptic number.

1881318133350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1881318133350 is an abundant number, since it is smaller than the sum of its proper divisors (3470478648930).

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

1881318133350 is a wasteful number, since it uses less digits than its factorization.

1881318133350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245923974 (or 245923966 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 1881318133350 in words is "one trillion, eight hundred eighty-one billion, three hundred eighteen million, one hundred thirty-three thousand, three hundred fifty".