2028181258 has 32 divisors (see below), whose sum is σ = 3289429440. Its totient is φ = 934778880.

The previous prime is 2028181249. The next prime is 2028181261. The reversal of 2028181258 is 8521818202.

It is a super-2 number, since 2×2028181258² = 8227038430604925128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450378 + ... + 454858.

It is an arithmetic number, because the mean of its divisors is an integer number (102794670).

Almost surely, 2^2028181258 is an apocalyptic number.

2028181258 is a deficient number, since it is larger than the sum of its proper divisors (1261248182).

2028181258 is a wasteful number, since it uses less digits than its factorization.

2028181258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822.

The product of its (nonzero) digits is 20480, while the sum is 37.

The square root of 2028181258 is about 45035.3334394229. Note that the first 3 decimals coincide. The cubic root of 2028181258 is about 1265.8111641393.

It can be divided in two parts, 20 and 28181258, that added together give a triangular number (28181278 = T₇₅₀₇).

The spelling of 2028181258 in words is "two billion, twenty-eight million, one hundred eighty-one thousand, two hundred fifty-eight".