2155539414 has 64 divisors (see below), whose sum is σ = 5087033856. Its totient is φ = 596035584.

The previous prime is 2155539409. The next prime is 2155539431. The reversal of 2155539414 is 4149355512.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 296329 + ... + 303515.

It is an arithmetic number, because the mean of its divisors is an integer number (79484904).

Almost surely, 2^2155539414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155539414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2543516928).

2155539414 is an abundant number, since it is smaller than the sum of its proper divisors (2931494442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2155539414 is a wasteful number, since it uses less digits than its factorization.

2155539414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7429.

The product of its digits is 108000, while the sum is 39.

The square root of 2155539414 is about 46427.7870891991. The cubic root of 2155539414 is about 1291.7703821669.

The spelling of 2155539414 in words is "two billion, one hundred fifty-five million, five hundred thirty-nine thousand, four hundred fourteen".