1669258952 has 8 divisors (see below), whose sum is σ = 3129860550. Its totient is φ = 834629472.

The previous prime is 1669258949. The next prime is 1669258963. The reversal of 1669258952 is 2598529661.

It can be written as a sum of positive squares in only one way, i.e., 890067556 + 779191396 = 29834^2 + 27914^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1669258894 and 1669258903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104328677 + ... + 104328692.

Almost surely, 2^1669258952 is an apocalyptic number.

It is an amenable number.

1669258952 is a deficient number, since it is larger than the sum of its proper divisors (1460601598).

1669258952 is a wasteful number, since it uses less digits than its factorization.

1669258952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208657375 (or 208657371 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 53.

The square root of 1669258952 is about 40856.5655923255. The cubic root of 1669258952 is about 1186.2454818999.

The spelling of 1669258952 in words is "one billion, six hundred sixty-nine million, two hundred fifty-eight thousand, nine hundred fifty-two".