1660535252 has 6 divisors (see below), whose sum is σ = 2905936698. Its totient is φ = 830267624.

The previous prime is 1660535189. The next prime is 1660535281. The reversal of 1660535252 is 2525350661.

It can be written as a sum of positive squares in only one way, i.e., 1458781636 + 201753616 = 38194^2 + 14204^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 207566903 + ... + 207566910.

It is an arithmetic number, because the mean of its divisors is an integer number (484322783).

Almost surely, 2^1660535252 is an apocalyptic number.

It is an amenable number.

1660535252 is a deficient number, since it is larger than the sum of its proper divisors (1245401446).

1660535252 is a wasteful number, since it uses less digits than its factorization.

1660535252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415133817 (or 415133815 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

The square root of 1660535252 is about 40749.6656673401. The cubic root of 1660535252 is about 1184.1753957425.

The spelling of 1660535252 in words is "one billion, six hundred sixty million, five hundred thirty-five thousand, two hundred fifty-two".