1340990193 has 8 divisors (see below), whose sum is σ = 1814673568. Its totient is φ = 880650144.

The previous prime is 1340990117. The next prime is 1340990213. The reversal of 1340990193 is 3910990431.

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

It is not a de Polignac number, because 1340990193 - 2¹³ = 1340982001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1340990293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3335596 + ... + 3335997.

It is an arithmetic number, because the mean of its divisors is an integer number (226834196).

Almost surely, 2^1340990193 is an apocalyptic number.

It is an amenable number.

1340990193 is a deficient number, since it is larger than the sum of its proper divisors (473683375).

1340990193 is an equidigital number, since it uses as much as digits as its factorization.

1340990193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671663.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 1340990193 is about 36619.5329434989. The cubic root of 1340990193 is about 1102.7452622525.

The spelling of 1340990193 in words is "one billion, three hundred forty million, nine hundred ninety thousand, one hundred ninety-three".