2643156252 has 48 divisors (see below), whose sum is σ = 7475596800. Its totient is φ = 800956080.

The previous prime is 2643156227. The next prime is 2643156259. The reversal of 2643156252 is 2526513462.

2643156252 is a `hidden beast` number, since 2 + 6 + 43 + 1 + 562 + 52 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2643156259) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1111252 + ... + 1113627.

It is an arithmetic number, because the mean of its divisors is an integer number (155741600).

Almost surely, 2^2643156252 is an apocalyptic number.

2643156252 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2643156252 is an abundant number, since it is smaller than the sum of its proper divisors (4832440548).

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

2643156252 is a wasteful number, since it uses less digits than its factorization.

2643156252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224903 (or 2224895 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 2643156252 is about 51411.6353756618. The cubic root of 2643156252 is about 1382.6352104176.

The spelling of 2643156252 in words is "two billion, six hundred forty-three million, one hundred fifty-six thousand, two hundred fifty-two".