1345861439 has 8 divisors (see below), whose sum is σ = 1451591232. Its totient is φ = 1240446240.

The previous prime is 1345861427. The next prime is 1345861469. The reversal of 1345861439 is 9341685431.

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

It is a cyclic number.

It is not a de Polignac number, because 1345861439 - 2¹⁶ = 1345795903 is a prime.

It is a super-2 number, since 2×1345861439² = 3622686025974301442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1345861439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345861469) 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, 69719 + ... + 86904.

It is an arithmetic number, because the mean of its divisors is an integer number (181448904).

Almost surely, 2^1345861439 is an apocalyptic number.

1345861439 is a deficient number, since it is larger than the sum of its proper divisors (105729793).

1345861439 is a wasteful number, since it uses less digits than its factorization.

1345861439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157297.

The product of its digits is 311040, while the sum is 44.

The square root of 1345861439 is about 36685.9842310384. The cubic root of 1345861439 is about 1104.0789165805.

The spelling of 1345861439 in words is "one billion, three hundred forty-five million, eight hundred sixty-one thousand, four hundred thirty-nine".