1916925 has 24 divisors (see below), whose sum is σ = 3228960. Its totient is φ = 1003200.

The previous prime is 1916921. The next prime is 1916939. The reversal of 1916925 is 5296191.

It is not a de Polignac number, because 1916925 - 2² = 1916921 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4366 + ... + 4784.

It is an arithmetic number, because the mean of its divisors is an integer number (134540).

2^1916925 is an apocalyptic number.

1916925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1916925 is a deficient number, since it is larger than the sum of its proper divisors (1312035).

1916925 is a wasteful number, since it uses less digits than its factorization.

1916925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493 (or 488 counting only the distinct ones).

The product of its digits is 4860, while the sum is 33.

The square root of 1916925 is about 1384.5306063789. The cubic root of 1916925 is about 124.2229124233. Note that the first 3 decimals are identical.

The spelling of 1916925 in words is "one million, nine hundred sixteen thousand, nine hundred twenty-five".