1340134393 has 8 divisors (see below), whose sum is σ = 1446064200. Its totient is φ = 1234610688.

The previous prime is 1340134387. The next prime is 1340134403. The reversal of 1340134393 is 3934310431.

It can be written as a sum of positive squares in 4 ways, for example, as 227044624 + 1113089769 = 15068^2 + 33363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1340134393 - 2²⁵ = 1306579961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340134303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94648 + ... + 107881.

It is an arithmetic number, because the mean of its divisors is an integer number (180758025).

Almost surely, 2^1340134393 is an apocalyptic number.

1340134393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1340134393 is a deficient number, since it is larger than the sum of its proper divisors (105929807).

1340134393 is a wasteful number, since it uses less digits than its factorization.

1340134393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203051.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1340134393 is about 36607.8460579150. The cubic root of 1340134393 is about 1102.5106271225.

The spelling of 1340134393 in words is "one billion, three hundred forty million, one hundred thirty-four thousand, three hundred ninety-three".