1855126028 has 48 divisors (see below), whose sum is σ = 3952677120. Its totient is φ = 744116544.

The previous prime is 1855125997. The next prime is 1855126033. The reversal of 1855126028 is 8206215581.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 1855125982 and 1855126000.

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, 23150 + ... + 65162.

It is an arithmetic number, because the mean of its divisors is an integer number (82347440).

Almost surely, 2^1855126028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1855126028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1976338560).

1855126028 is an abundant number, since it is smaller than the sum of its proper divisors (2097551092).

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

1855126028 is a wasteful number, since it uses less digits than its factorization.

1855126028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42126 (or 42124 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 1855126028 is about 43071.1739798209. The cubic root of 1855126028 is about 1228.7338035174.

The spelling of 1855126028 in words is "one billion, eight hundred fifty-five million, one hundred twenty-six thousand, twenty-eight".