1344605428638 has 24 divisors (see below), whose sum is σ = 2914540581576. Its totient is φ = 448012760400.

The previous prime is 1344605428597. The next prime is 1344605428693. The reversal of 1344605428638 is 8368245064431.

1344605428638 is a `hidden beast` number, since 1 + 3 + 4 + 4 + 60 + 542 + 8 + 6 + 38 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15710233 + ... + 15795588.

It is an arithmetic number, because the mean of its divisors is an integer number (121439190899).

Almost surely, 2^{1344605428638} is an apocalyptic number.

1344605428638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1344605428638 is an abundant number, since it is smaller than the sum of its proper divisors (1569935152938).

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

1344605428638 is a wasteful number, since it uses less digits than its factorization.

1344605428638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31508200 (or 31508197 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 54.

The spelling of 1344605428638 in words is "one trillion, three hundred forty-four billion, six hundred five million, four hundred twenty-eight thousand, six hundred thirty-eight".