2636748340 has 24 divisors (see below), whose sum is σ = 5538143520. Its totient is φ = 1054514208.

The previous prime is 2636748337. The next prime is 2636748343. The reversal of 2636748340 is 438476362.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2636748337) and next prime (2636748343).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2636748343) 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, 196279 + ... + 209281.

It is an arithmetic number, because the mean of its divisors is an integer number (230755980).

Almost surely, 2^2636748340 is an apocalyptic number.

2636748340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2636748340 is an abundant number, since it is smaller than the sum of its proper divisors (2901395180).

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

2636748340 is a wasteful number, since it uses less digits than its factorization.

2636748340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23151 (or 23149 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 43.

The square root of 2636748340 is about 51349.2778917094. The cubic root of 2636748340 is about 1381.5169798756.

The spelling of 2636748340 in words is "two billion, six hundred thirty-six million, seven hundred forty-eight thousand, three hundred forty".