1340134668 has 18 divisors (see below), whose sum is σ = 3387562724. Its totient is φ = 446711544.

The previous prime is 1340134589. The next prime is 1340134703. The reversal of 1340134668 is 8664310431.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 37225963 = 1340134668 / (1 + 3 + 4 + 0 + 1 + 3 + 4 + 6 + 6 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18612946 + ... + 18613017.

Almost surely, 2^1340134668 is an apocalyptic number.

1340134668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1340134668 is an abundant number, since it is smaller than the sum of its proper divisors (2047428056).

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

1340134668 is a wasteful number, since it uses less digits than its factorization.

1340134668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37225973 (or 37225968 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1340134668 is about 36607.8498139402. The cubic root of 1340134668 is about 1102.5107025354.

The spelling of 1340134668 in words is "one billion, three hundred forty million, one hundred thirty-four thousand, six hundred sixty-eight".