2640737835 has 16 divisors (see below), whose sum is σ = 4694645280. Its totient is φ = 1408393440.

The previous prime is 2640737809. The next prime is 2640737839. The reversal of 2640737835 is 5387370462.

It is not a de Polignac number, because 2640737835 - 2¹⁰ = 2640736811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2640737839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9780376 + ... + 9780645.

It is an arithmetic number, because the mean of its divisors is an integer number (293415330).

Almost surely, 2^2640737835 is an apocalyptic number.

2640737835 is a deficient number, since it is larger than the sum of its proper divisors (2053907445).

2640737835 is a wasteful number, since it uses less digits than its factorization.

2640737835 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561035 (or 19561029 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The square root of 2640737835 is about 51388.1098601612. The cubic root of 2640737835 is about 1382.2133903758.

The spelling of 2640737835 in words is "two billion, six hundred forty million, seven hundred thirty-seven thousand, eight hundred thirty-five".