1804478797 has 4 divisors (see below), whose sum is σ = 1968522336. Its totient is φ = 1640435260.

The previous prime is 1804478791. The next prime is 1804478813. The reversal of 1804478797 is 7978744081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1804478797 - 2²³ = 1796090189 is a prime.

It is a super-2 number, since 2×1804478797² = 6512287457645134418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804478791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82021753 + ... + 82021774.

It is an arithmetic number, because the mean of its divisors is an integer number (492130584).

Almost surely, 2^1804478797 is an apocalyptic number.

It is an amenable number.

1804478797 is a deficient number, since it is larger than the sum of its proper divisors (164043539).

1804478797 is a wasteful number, since it uses less digits than its factorization.

1804478797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164043538.

The product of its (nonzero) digits is 3161088, while the sum is 55.

The square root of 1804478797 is about 42479.1572067997. The cubic root of 1804478797 is about 1217.4484874629.

The spelling of 1804478797 in words is "one billion, eight hundred four million, four hundred seventy-eight thousand, seven hundred ninety-seven".