3681097236 has 18 divisors (see below), whose sum is σ = 9304995882. Its totient is φ = 1227032400.

The previous prime is 3681097229. The next prime is 3681097237. The reversal of 3681097236 is 6327901863.

It can be written as a sum of positive squares in only one way, i.e., 3147210000 + 533887236 = 56100^2 + 23106^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 3681097191 and 3681097200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3681097237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51126315 + ... + 51126386.

Almost surely, 2^3681097236 is an apocalyptic number.

3681097236 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3681097236 is an abundant number, since it is smaller than the sum of its proper divisors (5623898646).

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

3681097236 is a wasteful number, since it uses less digits than its factorization.

3681097236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102252711 (or 102252706 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 3681097236 is about 60672.0465783049. The cubic root of 3681097236 is about 1544.0419535657.

The spelling of 3681097236 in words is "three billion, six hundred eighty-one million, ninety-seven thousand, two hundred thirty-six".