840159613 has 16 divisors (see below), whose sum is σ = 921507840. Its totient is φ = 763009200.

The previous prime is 840159611. The next prime is 840159631. The reversal of 840159613 is 316951048.

It is not a de Polignac number, because 840159613 - 2¹ = 840159611 is a prime.

It is a super-3 number, since 3×840159613³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840159611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56358 + ... + 69688.

It is an arithmetic number, because the mean of its divisors is an integer number (57594240).

Almost surely, 2^840159613 is an apocalyptic number.

It is an amenable number.

840159613 is a deficient number, since it is larger than the sum of its proper divisors (81348227).

840159613 is a wasteful number, since it uses less digits than its factorization.

840159613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13488.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 840159613 is about 28985.5069474384. The cubic root of 840159613 is about 943.5985546030.

The spelling of 840159613 in words is "eight hundred forty million, one hundred fifty-nine thousand, six hundred thirteen".