2140636393 has 6 divisors (see below), whose sum is σ = 2490128106. Its totient is φ = 1834831152.

The previous prime is 2140636373. The next prime is 2140636403. The reversal of 2140636393 is 3936360412.

It can be written as a sum of positive squares in only one way, i.e., 1919578969 + 221057424 = 43813^2 + 14868^2 .

It is not a de Polignac number, because 2140636393 - 2¹⁷ = 2140505321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2140636313) 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 in 5 ways as a sum of consecutive naturals, for example, 21843180 + ... + 21843277.

It is an arithmetic number, because the mean of its divisors is an integer number (415021351).

Almost surely, 2^2140636393 is an apocalyptic number.

It is an amenable number.

2140636393 is a deficient number, since it is larger than the sum of its proper divisors (349491713).

2140636393 is an equidigital number, since it uses as much as digits as its factorization.

2140636393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43686471 (or 43686464 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 37.

The square root of 2140636393 is about 46267.0119307482. The cubic root of 2140636393 is about 1288.7864702872.

The spelling of 2140636393 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, three hundred ninety-three".