2164651542 has 24 divisors (see below), whose sum is σ = 4695424344. Its totient is φ = 720728064.

The previous prime is 2164651529. The next prime is 2164651549. The reversal of 2164651542 is 2451564612.

2164651542 is a `hidden beast` number, since 2 + 1 + 64 + 6 + 51 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 2164651497 and 2164651506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164651549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52203 + ... + 83990.

It is an arithmetic number, because the mean of its divisors is an integer number (195642681).

Almost surely, 2^2164651542 is an apocalyptic number.

2164651542 is an abundant number, since it is smaller than the sum of its proper divisors (2530772802).

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

2164651542 is a wasteful number, since it uses less digits than its factorization.

2164651542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137084 (or 137081 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The square root of 2164651542 is about 46525.8158660329. The cubic root of 2164651542 is about 1293.5880601620.

The spelling of 2164651542 in words is "two billion, one hundred sixty-four million, six hundred fifty-one thousand, five hundred forty-two".