2537720636 has 96 divisors (see below), whose sum is σ = 5303101440. Its totient is φ = 1049760000.

The previous prime is 2537720629. The next prime is 2537720639. The reversal of 2537720636 is 6360277352.

It is a Lucas number.

It is a junction number, because it is equal to n+sod(n) for n = 2537720593 and 2537720602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2537720639) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4690526 + ... + 4691066.

It is an arithmetic number, because the mean of its divisors is an integer number (55240640).

Almost surely, 2^2537720636 is an apocalyptic number.

It is an amenable number.

2537720636 is an abundant number, since it is smaller than the sum of its proper divisors (2765380804).

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

2537720636 is a wasteful number, since it uses less digits than its factorization.

2537720636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 41.

The square root of 2537720636 is about 50375.7941475864. The cubic root of 2537720636 is about 1364.0007331374. Note that the first 3 decimals are identical.

Adding to 2537720636 its reverse (6360277352), we get a palindrome (8897997988).

The spelling of 2537720636 in words is "two billion, five hundred thirty-seven million, seven hundred twenty thousand, six hundred thirty-six".