1659852401 has 4 divisors (see below), whose sum is σ = 1670992500. Its totient is φ = 1648712304.

The previous prime is 1659852391. The next prime is 1659852421. The reversal of 1659852401 is 1042589561.

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 121330225 + 1538522176 = 11015^2 + 39224^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1659852401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1659852421) 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, 5569826 + ... + 5570123.

It is an arithmetic number, because the mean of its divisors is an integer number (417748125).

Almost surely, 2^1659852401 is an apocalyptic number.

It is an amenable number.

1659852401 is a deficient number, since it is larger than the sum of its proper divisors (11140099).

1659852401 is a wasteful number, since it uses less digits than its factorization.

1659852401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11140098.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 1659852401 is about 40741.2861971735. The cubic root of 1659852401 is about 1184.0130532653.

The spelling of 1659852401 in words is "one billion, six hundred fifty-nine million, eight hundred fifty-two thousand, four hundred one".