1669124159 has 4 divisors (see below), whose sum is σ = 1676288016. Its totient is φ = 1661960304.

The previous prime is 1669124153. The next prime is 1669124201. The reversal of 1669124159 is 9514219661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9514219661 = 131 ⋅72627631.

It is a cyclic number.

It is not a de Polignac number, because 1669124159 - 2²⁰ = 1668075583 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 (1669124153) 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, 3581579 + ... + 3582044.

It is an arithmetic number, because the mean of its divisors is an integer number (419072004).

Almost surely, 2^1669124159 is an apocalyptic number.

1669124159 is a deficient number, since it is larger than the sum of its proper divisors (7163857).

1669124159 is an equidigital number, since it uses as much as digits as its factorization.

1669124159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7163856.

The product of its digits is 116640, while the sum is 44.

The square root of 1669124159 is about 40854.9159710310. The cubic root of 1669124159 is about 1186.2135511857.

The spelling of 1669124159 in words is "one billion, six hundred sixty-nine million, one hundred twenty-four thousand, one hundred fifty-nine".