2140987237 has 4 divisors (see below), whose sum is σ = 2143002400. Its totient is φ = 2138972076.

The previous prime is 2140987213. The next prime is 2140987253. The reversal of 2140987237 is 7327890412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140987237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2140987193 and 2140987202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140987207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005987 + ... + 1008112.

It is an arithmetic number, because the mean of its divisors is an integer number (535750600).

Almost surely, 2^2140987237 is an apocalyptic number.

It is an amenable number.

2140987237 is a deficient number, since it is larger than the sum of its proper divisors (2015163).

2140987237 is a wasteful number, since it uses less digits than its factorization.

2140987237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2015162.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 2140987237 is about 46270.8032888991. The cubic root of 2140987237 is about 1288.8568758764.

The spelling of 2140987237 in words is "two billion, one hundred forty million, nine hundred eighty-seven thousand, two hundred thirty-seven".