2101458858 has 16 divisors (see below), whose sum is σ = 4203407520. Its totient is φ = 700404656.

The previous prime is 2101458857. The next prime is 2101458869. The reversal of 2101458858 is 8588541012.

It is a super-2 number, since 2×2101458858² = 8832258663733328328, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2101458857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59341 + ... + 87887.

It is an arithmetic number, because the mean of its divisors is an integer number (262712970).

Almost surely, 2^2101458858 is an apocalyptic number.

2101458858 is an abundant number, since it is smaller than the sum of its proper divisors (2101948662).

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

2101458858 is a wasteful number, since it uses less digits than its factorization.

2101458858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40821.

The product of its (nonzero) digits is 102400, while the sum is 42.

The square root of 2101458858 is about 45841.6716318242. The cubic root of 2101458858 is about 1280.8756333559.

The spelling of 2101458858 in words is "two billion, one hundred one million, four hundred fifty-eight thousand, eight hundred fifty-eight".