2106558736 has 10 divisors (see below), whose sum is σ = 4081457582. Its totient is φ = 1053279360.

The previous prime is 2106558719. The next prime is 2106558739. The reversal of 2106558736 is 6378556012.

It can be written as a sum of positive squares in only one way, i.e., 1676411136 + 430147600 = 40944^2 + 20740^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2106558692 and 2106558701.

It is not an unprimeable number, because it can be changed into a prime (2106558739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65829945 + ... + 65829976.

Almost surely, 2^2106558736 is an apocalyptic number.

It is an amenable number.

2106558736 is a deficient number, since it is larger than the sum of its proper divisors (1974898846).

2106558736 is a wasteful number, since it uses less digits than its factorization.

2106558736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131659929 (or 131659923 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 2106558736 is about 45897.2628377772. The cubic root of 2106558736 is about 1281.9109510018.

The spelling of 2106558736 in words is "two billion, one hundred six million, five hundred fifty-eight thousand, seven hundred thirty-six".