1481785401 has 4 divisors (see below), whose sum is σ = 1975713872. Its totient is φ = 987856932.

The previous prime is 1481785397. The next prime is 1481785411. The reversal of 1481785401 is 1045871841.

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 not a de Polignac number, because 1481785401 - 2² = 1481785397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1481785401.

It is not an unprimeable number, because it can be changed into a prime (1481785411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246964231 + ... + 246964236.

It is an arithmetic number, because the mean of its divisors is an integer number (493928468).

Almost surely, 2^1481785401 is an apocalyptic number.

It is an amenable number.

1481785401 is a deficient number, since it is larger than the sum of its proper divisors (493928471).

1481785401 is an equidigital number, since it uses as much as digits as its factorization.

1481785401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 493928470.

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 1481785401 is about 38493.9657738716. The cubic root of 1481785401 is about 1140.0619133810.

The spelling of 1481785401 in words is "one billion, four hundred eighty-one million, seven hundred eighty-five thousand, four hundred one".