2159006405 has 16 divisors (see below), whose sum is σ = 2630534400. Its totient is φ = 1700836800.

The previous prime is 2159006383. The next prime is 2159006407. The reversal of 2159006405 is 5046009512.

It is a happy number.

It is not a de Polignac number, because 2159006405 - 2⁸ = 2159006149 is a prime.

It is a super-2 number, since 2×2159006405² = 9322617313662048050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159006407) 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, 146630 + ... + 160680.

It is an arithmetic number, because the mean of its divisors is an integer number (164408400).

Almost surely, 2^2159006405 is an apocalyptic number.

It is an amenable number.

2159006405 is a deficient number, since it is larger than the sum of its proper divisors (471527995).

2159006405 is a wasteful number, since it uses less digits than its factorization.

2159006405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14524.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 2159006405 is about 46465.1095446896. The cubic root of 2159006405 is about 1292.4625766257.

The spelling of 2159006405 in words is "two billion, one hundred fifty-nine million, six thousand, four hundred five".