1868958 has 72 divisors (see below), whose sum is σ = 5104008. Its totient is φ = 489888.

The previous prime is 1868947. The next prime is 1868983. The reversal of 1868958 is 8598681.

It is a super-3 number, since 3×1868958³ = 19584833341814021736, which contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 11385 + ... + 11547.

It is an arithmetic number, because the mean of its divisors is an integer number (70889).

2^1868958 is an apocalyptic number.

1868958 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 1868958, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2552004).

1868958 is an abundant number, since it is smaller than the sum of its proper divisors (3235050).

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

1868958 is a wasteful number, since it uses less digits than its factorization.

1868958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198 (or 188 counting only the distinct ones).

The product of its digits is 138240, while the sum is 45.

The square root of 1868958 is about 1367.0983870958. The cubic root of 1868958 is about 123.1780091603.

The spelling of 1868958 in words is "one million, eight hundred sixty-eight thousand, nine hundred fifty-eight".