2106356733 has 18 divisors (see below), whose sum is σ = 3277327326. Its totient is φ = 1295914032.

The previous prime is 2106356723. The next prime is 2106356741. The reversal of 2106356733 is 3376536012.

2106356733 is a `hidden beast` number, since 2 + 1 + 0 + 63 + 567 + 33 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1458246969 + 648109764 = 38187^2 + 25458^2 .

It is not a de Polignac number, because 2106356733 - 2¹⁶ = 2106291197 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106356723) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 494310 + ... + 498552.

Almost surely, 2^2106356733 is an apocalyptic number.

It is an amenable number.

2106356733 is a deficient number, since it is larger than the sum of its proper divisors (1170970593).

2106356733 is an frugal number, since it uses more digits than its factorization.

2106356733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8505 (or 4259 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 36.

The square root of 2106356733 is about 45895.0621853811. The cubic root of 2106356733 is about 1281.8699745140.

The spelling of 2106356733 in words is "two billion, one hundred six million, three hundred fifty-six thousand, seven hundred thirty-three".