1918125 has 60 divisors (see below), whose sum is σ = 3898752. Its totient is φ = 900000.

The previous prime is 1918121. The next prime is 1918129. The reversal of 1918125 is 5218191.

It is an interprime number because it is at equal distance from previous prime (1918121) and next prime (1918129).

It is not a de Polignac number, because 1918125 - 2² = 1918121 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1918121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 61860 + ... + 61890.

2^1918125 is an apocalyptic number.

1918125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1918125 is an abundant number, since it is smaller than the sum of its proper divisors (1980627).

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

1918125 is a wasteful number, since it uses less digits than its factorization.

1918125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68 (or 50 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The square root of 1918125 is about 1384.9638984465. The cubic root of 1918125 is about 124.2488283042.

The spelling of 1918125 in words is "one million, nine hundred eighteen thousand, one hundred twenty-five".