1344666140 has 24 divisors (see below), whose sum is σ = 2833009872. Its totient is φ = 536112000.

The previous prime is 1344666121. The next prime is 1344666161. The reversal of 1344666140 is 416664431.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1344666140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103361 + ... + 115640.

It is an arithmetic number, because the mean of its divisors is an integer number (118042078).

Almost surely, 2^1344666140 is an apocalyptic number.

1344666140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1344666140 is an abundant number, since it is smaller than the sum of its proper divisors (1488343732).

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

1344666140 is a wasteful number, since it uses less digits than its factorization.

1344666140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219317 (or 219315 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 1344666140 is about 36669.6896632628. The cubic root of 1344666140 is about 1103.7519648184.

The spelling of 1344666140 in words is "one billion, three hundred forty-four million, six hundred sixty-six thousand, one hundred forty".