2101458866 has 8 divisors (see below), whose sum is σ = 3394664364. Its totient is φ = 969904080.

The previous prime is 2101458857. The next prime is 2101458869. The reversal of 2101458866 is 6688541012.

It can be written as a sum of positive squares in 2 ways, for example, as 2072889841 + 28569025 = 45529^2 + 5345^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2101458866² = 8832258730980011912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2101458869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40412645 + ... + 40412696.

Almost surely, 2^2101458866 is an apocalyptic number.

2101458866 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2101458866 is a deficient number, since it is larger than the sum of its proper divisors (1293205498).

2101458866 is a wasteful number, since it uses less digits than its factorization.

2101458866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80825356.

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 2101458866 is about 45841.6717190811. The cubic root of 2101458866 is about 1280.8756349813.

Adding to 2101458866 its reverse (6688541012), we get a palindrome (8789999878).

The spelling of 2101458866 in words is "two billion, one hundred one million, four hundred fifty-eight thousand, eight hundred sixty-six".