2140636544 has 32 divisors (see below), whose sum is σ = 4312488600. Its totient is φ = 1058286592.

The previous prime is 2140636523. The next prime is 2140636571. The reversal of 2140636544 is 4456360412.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82562 + ... + 105345.

Almost surely, 2^2140636544 is an apocalyptic number.

It is an amenable number.

2140636544 is an abundant number, since it is smaller than the sum of its proper divisors (2171852056).

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

2140636544 is an equidigital number, since it uses as much as digits as its factorization.

2140636544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188010 (or 187998 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 35.

The square root of 2140636544 is about 46267.0135625804. The cubic root of 2140636544 is about 1288.7865005908.

Adding to 2140636544 its reverse (4456360412), we get a palindrome (6596996956).

The spelling of 2140636544 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, five hundred forty-four".