1878825 has 48 divisors (see below), whose sum is σ = 3499776. Its totient is φ = 883200.

The previous prime is 1878803. The next prime is 1878827. The reversal of 1878825 is 5288781.

It is not a de Polignac number, because 1878825 - 2⁷ = 1878697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1878827) 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 47 ways as a sum of consecutive naturals, for example, 39952 + ... + 39998.

It is an arithmetic number, because the mean of its divisors is an integer number (72912).

2^1878825 is an apocalyptic number.

1878825 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1878825 is a deficient number, since it is larger than the sum of its proper divisors (1620951).

1878825 is a wasteful number, since it uses less digits than its factorization.

1878825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114 (or 109 counting only the distinct ones).

The product of its digits is 35840, while the sum is 39.

The square root of 1878825 is about 1370.7023746970. The cubic root of 1878825 is about 123.3943979728.

The spelling of 1878825 in words is "one million, eight hundred seventy-eight thousand, eight hundred twenty-five".