2221377858 has 150 divisors (see below), whose sum is σ = 6053379651. Its totient is φ = 607084632.

The previous prime is 2221377787. The next prime is 2221377863. The reversal of 2221377858 is 8587731222.

2221377858 is a `hidden beast` number, since 2 + 221 + 377 + 8 + 58 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1110688929 + 1110688929 = 33327^2 + 33327^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33327.

It is a super-3 number, since 3×2221377858³ (a number of 29 digits) contains 333 as substring.

Its product of digits (376320) is a multiple of the sum of its prime divisors (35).

It is an unprimeable number.

It is a polite number, since it can be written in 74 ways as a sum of consecutive naturals, for example, 96581635 + ... + 96581657.

Almost surely, 2^2221377858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221377858

2221377858 is an abundant number, since it is smaller than the sum of its proper divisors (3832001793).

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

2221377858 is an frugal number, since it uses more digits than its factorization.

2221377858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120 (or 35 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 2221377858 is about 47131.4953932081. The cubic root of 2221377858 is about 1304.7905807433.

The spelling of 2221377858 in words is "two billion, two hundred twenty-one million, three hundred seventy-seven thousand, eight hundred fifty-eight".