1004166855 has 48 divisors (see below), whose sum is σ = 1813321440. Its totient is φ = 527243904.

The previous prime is 1004166851. The next prime is 1004166869. The reversal of 1004166855 is 5586614001.

It is not a de Polignac number, because 1004166855 - 2² = 1004166851 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004166851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 605187 + ... + 606843.

It is an arithmetic number, because the mean of its divisors is an integer number (37777530).

Almost surely, 2^1004166855 is an apocalyptic number.

1004166855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1004166855 is a deficient number, since it is larger than the sum of its proper divisors (809154585).

1004166855 is an equidigital number, since it uses as much as digits as its factorization.

1004166855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1004166855 is about 31688.5918746794. The cubic root of 1004166855 is about 1001.3870269335.

The spelling of 1004166855 in words is "one billion, four million, one hundred sixty-six thousand, eight hundred fifty-five".