1667549345 has 64 divisors (see below), whose sum is σ = 2638172160. Its totient is φ = 980294400.

The previous prime is 1667549333. The next prime is 1667549353. The reversal of 1667549345 is 5439457661.

It is not a de Polignac number, because 1667549345 - 2¹⁰ = 1667548321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1667549293 and 1667549302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2274599 + ... + 2275331.

It is an arithmetic number, because the mean of its divisors is an integer number (41221440).

Almost surely, 2^1667549345 is an apocalyptic number.

It is an amenable number.

1667549345 is a deficient number, since it is larger than the sum of its proper divisors (970622815).

1667549345 is a wasteful number, since it uses less digits than its factorization.

1667549345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086.

The product of its digits is 2721600, while the sum is 50.

The square root of 1667549345 is about 40835.6381730468. The cubic root of 1667549345 is about 1185.8403707345.

The spelling of 1667549345 in words is "one billion, six hundred sixty-seven million, five hundred forty-nine thousand, three hundred forty-five".