2148635772 has 18 divisors (see below), whose sum is σ = 5431273848. Its totient is φ = 716211912.

The previous prime is 2148635747. The next prime is 2148635773. The reversal of 2148635772 is 2775368412.

2148635772 is a `hidden beast` number, since 2 + 1 + 4 + 8 + 635 + 7 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148635773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29842128 + ... + 29842199.

It is an arithmetic number, because the mean of its divisors is an integer number (301737436).

Almost surely, 2^2148635772 is an apocalyptic number.

It is an amenable number.

2148635772 is an abundant number, since it is smaller than the sum of its proper divisors (3282638076).

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

2148635772 is a wasteful number, since it uses less digits than its factorization.

2148635772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59684337 (or 59684332 counting only the distinct ones).

The product of its digits is 564480, while the sum is 45.

The square root of 2148635772 is about 46353.3792942866. The cubic root of 2148635772 is about 1290.3898371102.

The spelling of 2148635772 in words is "two billion, one hundred forty-eight million, six hundred thirty-five thousand, seven hundred seventy-two".