1665798052 has 6 divisors (see below), whose sum is σ = 2915146598. Its totient is φ = 832899024.

The previous prime is 1665798047. The next prime is 1665798073. The reversal of 1665798052 is 2508975661.

It can be written as a sum of positive squares in only one way, i.e., 1572598336 + 93199716 = 39656^2 + 9654^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1665797987 and 1665798005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208224753 + ... + 208224760.

Almost surely, 2^1665798052 is an apocalyptic number.

It is an amenable number.

1665798052 is a deficient number, since it is larger than the sum of its proper divisors (1249348546).

1665798052 is a wasteful number, since it uses less digits than its factorization.

1665798052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416449517 (or 416449515 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 1665798052 is about 40814.1893463536. The cubic root of 1665798052 is about 1185.4250943916.

The spelling of 1665798052 in words is "one billion, six hundred sixty-five million, seven hundred ninety-eight thousand, fifty-two".