1340198943 has 8 divisors (see below), whose sum is σ = 1798314288. Its totient is φ = 887774784.

The previous prime is 1340198929. The next prime is 1340198957. The reversal of 1340198943 is 3498910431.

It is an interprime number because it is at equal distance from previous prime (1340198929) and next prime (1340198957).

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

It is not a de Polignac number, because 1340198943 - 2¹⁰ = 1340197919 is a prime.

It is a super-2 number, since 2×1340198943² = 3592266413636634498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1340198895 and 1340198904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340198903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422246 + ... + 1423187.

It is an arithmetic number, because the mean of its divisors is an integer number (224789286).

Almost surely, 2^1340198943 is an apocalyptic number.

1340198943 is a deficient number, since it is larger than the sum of its proper divisors (458115345).

1340198943 is a wasteful number, since it uses less digits than its factorization.

1340198943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2845593.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 1340198943 is about 36608.7276888995. The cubic root of 1340198943 is about 1102.5283283120.

The spelling of 1340198943 in words is "one billion, three hundred forty million, one hundred ninety-eight thousand, nine hundred forty-three".