1338734323881 has 6 divisors (see below), whose sum is σ = 1933727356730. Its totient is φ = 892489549248.

The previous prime is 1338734323877. The next prime is 1338734323903. The reversal of 1338734323881 is 1883234378331.

1338734323881 is a `hidden beast` number, since 1 + 3 + 38 + 73 + 432 + 38 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1295601680025 + 43132643856 = 1138245^2 + 207684^2 .

It is not a de Polignac number, because 1338734323881 - 2² = 1338734323877 is a prime.

It is a super-2 number, since 2×1338734323881² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338734323831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 74374129096 + ... + 74374129113.

Almost surely, 2^{1338734323881} is an apocalyptic number.

It is an amenable number.

1338734323881 is a deficient number, since it is larger than the sum of its proper divisors (594993032849).

1338734323881 is a wasteful number, since it uses less digits than its factorization.

1338734323881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148748258215 (or 148748258212 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 1338734323881 in words is "one trillion, three hundred thirty-eight billion, seven hundred thirty-four million, three hundred twenty-three thousand, eight hundred eighty-one".