2159098491 has 16 divisors (see below), whose sum is σ = 3163436928. Its totient is φ = 1298990400.

The previous prime is 2159098457. The next prime is 2159098493. The reversal of 2159098491 is 1948909512.

It is not a de Polignac number, because 2159098491 - 2¹⁵ = 2159065723 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2159098491.

It is not an unprimeable number, because it can be changed into a prime (2159098493) 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, 234265 + ... + 243306.

It is an arithmetic number, because the mean of its divisors is an integer number (197714808).

Almost surely, 2^2159098491 is an apocalyptic number.

2159098491 is a deficient number, since it is larger than the sum of its proper divisors (1004338437).

2159098491 is a wasteful number, since it uses less digits than its factorization.

2159098491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477722.

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 2159098491 is about 46466.1004496827. The cubic root of 2159098491 is about 1292.4809517475.

The spelling of 2159098491 in words is "two billion, one hundred fifty-nine million, ninety-eight thousand, four hundred ninety-one".