2168987058 has 120 divisors (see below), whose sum is σ = 5986568412. Its totient is φ = 583220736.

The previous prime is 2168987057. The next prime is 2168987069. The reversal of 2168987058 is 8507898612.

It can be written as a sum of positive squares in 2 ways, for example, as 2167554249 + 1432809 = 46557^2 + 1197^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2168986995 and 2168987013.

It is not an unprimeable number, because it can be changed into a prime (2168987057) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 126910 + ... + 142982.

Almost surely, 2^2168987058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168987058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2993284206).

2168987058 is an abundant number, since it is smaller than the sum of its proper divisors (3817581354).

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

2168987058 is a wasteful number, since it uses less digits than its factorization.

2168987058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16118 (or 16102 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The square root of 2168987058 is about 46572.3851439885. The cubic root of 2168987058 is about 1294.4511138689.

The spelling of 2168987058 in words is "two billion, one hundred sixty-eight million, nine hundred eighty-seven thousand, fifty-eight".