2101458865 has 16 divisors (see below), whose sum is σ = 2753403840. Its totient is φ = 1526998720.

The previous prime is 2101458857. The next prime is 2101458869. The reversal of 2101458865 is 5688541012.

It is a happy number.

2101458865 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2101458865 - 2³ = 2101458857 is a prime.

It is a super-2 number, since 2×2101458865² = 8832258722574176450, 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 15 ways as a sum of consecutive naturals, for example, 49191 + ... + 81379.

It is an arithmetic number, because the mean of its divisors is an integer number (172087740).

Almost surely, 2^2101458865 is an apocalyptic number.

It is an amenable number.

2101458865 is a deficient number, since it is larger than the sum of its proper divisors (651944975).

2101458865 is a wasteful number, since it uses less digits than its factorization.

2101458865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33392.

The product of its (nonzero) digits is 76800, while the sum is 40.

The square root of 2101458865 is about 45841.6717081740. The cubic root of 2101458865 is about 1280.8756347781.

Adding to 2101458865 its reverse (5688541012), we get a palindrome (7789999877).

The spelling of 2101458865 in words is "two billion, one hundred one million, four hundred fifty-eight thousand, eight hundred sixty-five".