1338164022780 has 144 divisors (see below), whose sum is σ = 4512346884864. Its totient is φ = 318768583680.

The previous prime is 1338164022773. The next prime is 1338164022827. The reversal of 1338164022780 is 872204618331.

1338164022780 is a `hidden beast` number, since 1 + 3 + 381 + 6 + 40 + 227 + 8 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9151089 + ... + 9296168.

It is an arithmetic number, because the mean of its divisors is an integer number (31335742256).

Almost surely, 2^{1338164022780} is an apocalyptic number.

1338164022780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1338164022780 is an abundant number, since it is smaller than the sum of its proper divisors (3174182862084).

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

1338164022780 is a wasteful number, since it uses less digits than its factorization.

1338164022780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18447316 (or 18447311 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 1338164022780 in words is "one trillion, three hundred thirty-eight billion, one hundred sixty-four million, twenty-two thousand, seven hundred eighty".