1404113681 has 4 divisors (see below), whose sum is σ = 1404509364. Its totient is φ = 1403718000.

The previous prime is 1404113671. The next prime is 1404113723. The reversal of 1404113681 is 1863114041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1353062656 + 51051025 = 36784^2 + 7145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1404113681 - 2⁶ = 1404113617 is a prime.

It is a super-2 number, since 2×1404113681² = 3943070458342739522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a zygodrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1404113611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192470 + ... + 199631.

It is an arithmetic number, because the mean of its divisors is an integer number (351127341).

Almost surely, 2^1404113681 is an apocalyptic number.

It is an amenable number.

1404113681 is a deficient number, since it is larger than the sum of its proper divisors (395683).

1404113681 is an equidigital number, since it uses as much as digits as its factorization.

1404113681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395682.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 1404113681 is about 37471.5049204059. The cubic root of 1404113681 is about 1119.7835681384.

The spelling of 1404113681 in words is "one billion, four hundred four million, one hundred thirteen thousand, six hundred eighty-one".