1345091983 has 2 divisors, whose sum is σ = 1345091984. Its totient is φ = 1345091982.

The previous prime is 1345091963. The next prime is 1345092011. The reversal of 1345091983 is 3891905431.

It is a weak prime.

It is an emirp because it is prime and its reverse (3891905431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1345091983 - 2²¹ = 1342994831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345091963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672545991 + 672545992.

It is an arithmetic number, because the mean of its divisors is an integer number (672545992).

Almost surely, 2^1345091983 is an apocalyptic number.

1345091983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345091983 is an equidigital number, since it uses as much as digits as its factorization.

1345091983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 1345091983 is about 36675.4956749053. The cubic root of 1345091983 is about 1103.8684684434.

The spelling of 1345091983 in words is "one billion, three hundred forty-five million, ninety-one thousand, nine hundred eighty-three".