1659453311 has 4 divisors (see below), whose sum is σ = 1699927824. Its totient is φ = 1618978800.

The previous prime is 1659453269. The next prime is 1659453329. The reversal of 1659453311 is 1133549561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1133549561 = 661 ⋅1714901.

It is a cyclic number.

It is not a de Polignac number, because 1659453311 - 2²⁶ = 1592344447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659453371) 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, 20237195 + ... + 20237276.

It is an arithmetic number, because the mean of its divisors is an integer number (424981956).

Almost surely, 2^1659453311 is an apocalyptic number.

1659453311 is a deficient number, since it is larger than the sum of its proper divisors (40474513).

1659453311 is an equidigital number, since it uses as much as digits as its factorization.

1659453311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40474512.

The product of its digits is 48600, while the sum is 38.

The square root of 1659453311 is about 40736.3880455791. The cubic root of 1659453311 is about 1183.9181521272.

The spelling of 1659453311 in words is "one billion, six hundred fifty-nine million, four hundred fifty-three thousand, three hundred eleven".