5209489636 has 24 divisors (see below), whose sum is σ = 9834279224. Its totient is φ = 2400364800.

The previous prime is 5209489619. The next prime is 5209489651. The reversal of 5209489636 is 6369849025.

It can be written as a sum of positive squares in 4 ways, for example, as 204776100 + 5004713536 = 14310^2 + 70744^2 .

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52095 + ... + 114598.

Almost surely, 2^5209489636 is an apocalyptic number.

It is an amenable number.

5209489636 is a deficient number, since it is larger than the sum of its proper divisors (4624789588).

5209489636 is a wasteful number, since it uses less digits than its factorization.

5209489636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167311 (or 167309 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 52.

The square root of 5209489636 is about 72176.7943039867. The cubic root of 5209489636 is about 1733.5314540633.

It can be divided in two parts, 5209489 and 636, that added together give a palindrome (5210125).

The spelling of 5209489636 in words is "five billion, two hundred nine million, four hundred eighty-nine thousand, six hundred thirty-six".