1340085937 has 2 divisors, whose sum is σ = 1340085938. Its totient is φ = 1340085936.

The previous prime is 1340085931. The next prime is 1340085953. The reversal of 1340085937 is 7395800431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1307834896 + 32251041 = 36164^2 + 5679^2 .

It is an emirp because it is prime and its reverse (7395800431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340085937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1340085937.

It is not a weakly prime, because it can be changed into another prime (1340085931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 670042968 + 670042969.

It is an arithmetic number, because the mean of its divisors is an integer number (670042969).

Almost surely, 2^1340085937 is an apocalyptic number.

It is an amenable number.

1340085937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1340085937 is an equidigital number, since it uses as much as digits as its factorization.

1340085937 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 1340085937 is about 36607.1842265968. The cubic root of 1340085937 is about 1102.4973389281.

The spelling of 1340085937 in words is "one billion, three hundred forty million, eighty-five thousand, nine hundred thirty-seven".