2145000258 has 64 divisors (see below), whose sum is σ = 4851916800. Its totient is φ = 702308880.

The previous prime is 2145000197. The next prime is 2145000281. The reversal of 2145000258 is 8520005412.

It is a happy number.

It is a super-2 number, since 2×2145000258² = 9202052213640133128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 898935 + ... + 901317.

It is an arithmetic number, because the mean of its divisors is an integer number (75811200).

Almost surely, 2^2145000258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2145000258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2425958400).

2145000258 is an abundant number, since it is smaller than the sum of its proper divisors (2706916542).

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

2145000258 is a wasteful number, since it uses less digits than its factorization.

2145000258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684 (or 2678 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 2145000258 is about 46314.1474929637. The cubic root of 2145000258 is about 1289.6616419240.

The spelling of 2145000258 in words is "two billion, one hundred forty-five million, two hundred fifty-eight", and thus it is an aban number.