1858041042 has 64 divisors (see below), whose sum is σ = 4372171776. Its totient is φ = 518967360.

The previous prime is 1858041023. The next prime is 1858041043. The reversal of 1858041042 is 2401408581.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1858040994 and 1858041012.

It is not an unprimeable number, because it can be changed into a prime (1858041043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 842313 + ... + 844515.

It is an arithmetic number, because the mean of its divisors is an integer number (68315184).

Almost surely, 2^1858041042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1858041042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2186085888).

1858041042 is an abundant number, since it is smaller than the sum of its proper divisors (2514130734).

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

1858041042 is a wasteful number, since it uses less digits than its factorization.

1858041042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215.

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 1858041042 is about 43105.0001971929. Note that the first 3 decimals coincide. The cubic root of 1858041042 is about 1229.3770485533.

The spelling of 1858041042 in words is "one billion, eight hundred fifty-eight million, forty-one thousand, forty-two".