2140636511 has 8 divisors (see below), whose sum is σ = 2317373184. Its totient is φ = 1965624480.

The previous prime is 2140636493. The next prime is 2140636513. The reversal of 2140636511 is 1156360412.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2140636511 - 2¹⁸ = 2140374367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140636513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428576 + ... + 433541.

It is an arithmetic number, because the mean of its divisors is an integer number (289671648).

Almost surely, 2^2140636511 is an apocalyptic number.

2140636511 is a deficient number, since it is larger than the sum of its proper divisors (176736673).

2140636511 is a wasteful number, since it uses less digits than its factorization.

2140636511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862321.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 2140636511 is about 46267.0132059548. The cubic root of 2140636511 is about 1288.7864939681.

Adding to 2140636511 its reverse (1156360412), we get a palindrome (3296996923).

The spelling of 2140636511 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, five hundred eleven".