2159346391 has 16 divisors (see below), whose sum is σ = 2215231200. Its totient is φ = 2104363008.

The previous prime is 2159346377. The next prime is 2159346401. The reversal of 2159346391 is 1936439512.

It is a happy number.

It is not a de Polignac number, because 2159346391 - 2¹⁷ = 2159215319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159346331) 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 15 ways as a sum of consecutive naturals, for example, 3357916 + ... + 3358558.

It is an arithmetic number, because the mean of its divisors is an integer number (138451950).

Almost surely, 2^2159346391 is an apocalyptic number.

2159346391 is a deficient number, since it is larger than the sum of its proper divisors (55884809).

2159346391 is an equidigital number, since it uses as much as digits as its factorization.

2159346391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218.

The product of its digits is 174960, while the sum is 43.

The square root of 2159346391 is about 46468.7679092097. The cubic root of 2159346391 is about 1292.5304158745.

The spelling of 2159346391 in words is "two billion, one hundred fifty-nine million, three hundred forty-six thousand, three hundred ninety-one".