1804242555 has 24 divisors (see below), whose sum is σ = 3311317152. Its totient is φ = 905658624.

The previous prime is 1804242541. The next prime is 1804242593. The reversal of 1804242555 is 5552424081.

1804242555 is a `hidden beast` number, since 1 + 80 + 4 + 24 + 2 + 555 = 666.

It is not a de Polignac number, because 1804242555 - 2¹² = 1804238459 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1178479 + ... + 1180008.

It is an arithmetic number, because the mean of its divisors is an integer number (137971548).

Almost surely, 2^1804242555 is an apocalyptic number.

1804242555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1804242555 is a deficient number, since it is larger than the sum of its proper divisors (1507074597).

1804242555 is a wasteful number, since it uses less digits than its factorization.

1804242555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358515 (or 2358512 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 1804242555 is about 42476.3764344371. The cubic root of 1804242555 is about 1217.3953557741.

The spelling of 1804242555 in words is "one billion, eight hundred four million, two hundred forty-two thousand, five hundred fifty-five".