1345001999 has 6 divisors (see below), whose sum is σ = 1478390760. Its totient is φ = 1222728980.

The previous prime is 1345001989. The next prime is 1345002011. The reversal of 1345001999 is 9991005431.

It is a de Polignac number, because none of the positive numbers 2^k-1345001999 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345001989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5557739 + ... + 5557980.

It is an arithmetic number, because the mean of its divisors is an integer number (246398460).

Almost surely, 2^1345001999 is an apocalyptic number.

1345001999 is a deficient number, since it is larger than the sum of its proper divisors (133388761).

1345001999 is a wasteful number, since it uses less digits than its factorization.

1345001999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11115741 (or 11115730 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 41.

The square root of 1345001999 is about 36674.2688952350. The cubic root of 1345001999 is about 1103.8438523535.

The spelling of 1345001999 in words is "one billion, three hundred forty-five million, one thousand, nine hundred ninety-nine".