2155737132 has 96 divisors (see below), whose sum is σ = 5700119040. Its totient is φ = 704433600.

The previous prime is 2155737119. The next prime is 2155737149. The reversal of 2155737132 is 2317375512.

It is a happy number.

2155737132 is a `hidden beast` number, since 2 + 1 + 557 + 3 + 71 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1166233 + ... + 1168079.

It is an arithmetic number, because the mean of its divisors is an integer number (59376240).

Almost surely, 2^2155737132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2155737132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2850059520).

2155737132 is an abundant number, since it is smaller than the sum of its proper divisors (3544381908).

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

2155737132 is a wasteful number, since it uses less digits than its factorization.

2155737132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068 (or 2060 counting only the distinct ones).

The product of its digits is 44100, while the sum is 36.

The square root of 2155737132 is about 46429.9163471140. The cubic root of 2155737132 is about 1291.8098770680.

The spelling of 2155737132 in words is "two billion, one hundred fifty-five million, seven hundred thirty-seven thousand, one hundred thirty-two".