2138632532 has 6 divisors (see below), whose sum is σ = 3742606938. Its totient is φ = 1069316264.

The previous prime is 2138632519. The next prime is 2138632537. The reversal of 2138632532 is 2352368312.

It can be written as a sum of positive squares in only one way, i.e., 1334002576 + 804629956 = 36524^2 + 28366^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2138632492 and 2138632501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138632537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267329063 + ... + 267329070.

It is an arithmetic number, because the mean of its divisors is an integer number (623767823).

Almost surely, 2^2138632532 is an apocalyptic number.

It is an amenable number.

2138632532 is a deficient number, since it is larger than the sum of its proper divisors (1603974406).

2138632532 is a wasteful number, since it uses less digits than its factorization.

2138632532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534658137 (or 534658135 counting only the distinct ones).

The product of its digits is 51840, while the sum is 35.

The square root of 2138632532 is about 46245.3514636877. The cubic root of 2138632532 is about 1288.3841981375.

The spelling of 2138632532 in words is "two billion, one hundred thirty-eight million, six hundred thirty-two thousand, five hundred thirty-two".