1810369404 has 18 divisors (see below), whose sum is σ = 4576211640. Its totient is φ = 603456456.

The previous prime is 1810369387. The next prime is 1810369409. The reversal of 1810369404 is 4049630181.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 50288039 = 1810369404 / (1 + 8 + 1 + 0 + 3 + 6 + 9 + 4 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810369409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25143984 + ... + 25144055.

It is an arithmetic number, because the mean of its divisors is an integer number (254233980).

Almost surely, 2^1810369404 is an apocalyptic number.

It is an amenable number.

1810369404 is an abundant number, since it is smaller than the sum of its proper divisors (2765842236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1810369404 is a wasteful number, since it uses less digits than its factorization.

1810369404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50288049 (or 50288044 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1810369404 is about 42548.4359759557. The cubic root of 1810369404 is about 1218.7718097557.

Adding to 1810369404 its reverse (4049630181), we get a palindrome (5859999585).

The spelling of 1810369404 in words is "one billion, eight hundred ten million, three hundred sixty-nine thousand, four hundred four".