2132154405 has 24 divisors (see below), whose sum is σ = 3696959448. Its totient is φ = 1136772096.

The previous prime is 2132154397. The next prime is 2132154419. The reversal of 2132154405 is 5044512312.

2132154405 is a `hidden beast` number, since 2 + 1 + 3 + 215 + 440 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 74080449 + 2058073956 = 8607^2 + 45366^2 .

It is not a de Polignac number, because 2132154405 - 2³ = 2132154397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177469 + ... + 189101.

It is an arithmetic number, because the mean of its divisors is an integer number (154039977).

Almost surely, 2^2132154405 is an apocalyptic number.

It is an amenable number.

2132154405 is a deficient number, since it is larger than the sum of its proper divisors (1564805043).

2132154405 is a wasteful number, since it uses less digits than its factorization.

2132154405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15717 (or 15714 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 2132154405 is about 46175.2574979285. The cubic root of 2132154405 is about 1287.0820018641.

Adding to 2132154405 its reverse (5044512312), we get a palindrome (7176666717).

The spelling of 2132154405 in words is "two billion, one hundred thirty-two million, one hundred fifty-four thousand, four hundred five".