1890002401 has 8 divisors (see below), whose sum is σ = 2196613440. Its totient is φ = 1592544048.

The previous prime is 1890002393. The next prime is 1890002431. The reversal of 1890002401 is 1042000981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1890002401 - 2³ = 1890002393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1890002431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2287726 + ... + 2288551.

It is an arithmetic number, because the mean of its divisors is an integer number (274576680).

Almost surely, 2^1890002401 is an apocalyptic number.

It is an amenable number.

1890002401 is a deficient number, since it is larger than the sum of its proper divisors (306611039).

1890002401 is an equidigital number, since it uses as much as digits as its factorization.

1890002401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576343.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1890002401 is about 43474.1578526830. The cubic root of 1890002401 is about 1236.3861134982.

The spelling of 1890002401 in words is "one billion, eight hundred ninety million, two thousand, four hundred one".