1942494858 has 56 divisors (see below), whose sum is σ = 4440434916. Its totient is φ = 636854400.

The previous prime is 1942494823. The next prime is 1942494859. The reversal of 1942494858 is 8584942491.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1155524049 + 786970809 = 33993^2 + 28053^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1942494859) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 78018 + ... + 99858.

Almost surely, 2^1942494858 is an apocalyptic number.

1942494858 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1942494858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2220217458).

1942494858 is an abundant number, since it is smaller than the sum of its proper divisors (2497940058).

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

1942494858 is an equidigital number, since it uses as much as digits as its factorization.

1942494858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21922 (or 21907 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 1942494858 is about 44073.7434080655. The cubic root of 1942494858 is about 1247.7281096865.

The spelling of 1942494858 in words is "one billion, nine hundred forty-two million, four hundred ninety-four thousand, eight hundred fifty-eight".