1804937121 has 32 divisors (see below), whose sum is σ = 3004888320. Its totient is φ = 1062433152.

The previous prime is 1804937117. The next prime is 1804937131. The reversal of 1804937121 is 1217394081.

It is a happy number.

1804937121 is a `hidden beast` number, since 1 + 80 + 493 + 71 + 21 = 666.

It is not a de Polignac number, because 1804937121 - 2² = 1804937117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1804937111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103716 + ... + 119861.

It is an arithmetic number, because the mean of its divisors is an integer number (93902760).

Almost surely, 2^1804937121 is an apocalyptic number.

It is an amenable number.

1804937121 is a deficient number, since it is larger than the sum of its proper divisors (1199951199).

1804937121 is a wasteful number, since it uses less digits than its factorization.

1804937121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223622 (or 223616 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1804937121 is about 42484.5515570072. The cubic root of 1804937121 is about 1217.5515529809.

The spelling of 1804937121 in words is "one billion, eight hundred four million, nine hundred thirty-seven thousand, one hundred twenty-one".