1667629952 has 16 divisors (see below), whose sum is σ = 3322231800. Its totient is φ = 833814912.

The previous prime is 1667629939. The next prime is 1667629961. The reversal of 1667629952 is 2599267661.

It is a tau number, because it is divible by the number of its divisors (16).

It is a junction number, because it is equal to n+sod(n) for n = 1667629894 and 1667629903.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6514052 + ... + 6514307.

Almost surely, 2^1667629952 is an apocalyptic number.

It is an amenable number.

1667629952 is a deficient number, since it is larger than the sum of its proper divisors (1654601848).

1667629952 is an equidigital number, since it uses as much as digits as its factorization.

1667629952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13028373 (or 13028361 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 53.

The square root of 1667629952 is about 40836.6251299002. The cubic root of 1667629952 is about 1185.8594777142.

The spelling of 1667629952 in words is "one billion, six hundred sixty-seven million, six hundred twenty-nine thousand, nine hundred fifty-two".