1660928941 has 12 divisors (see below), whose sum is σ = 1951236540. Its totient is φ = 1409553600.

The previous prime is 1660928939. The next prime is 1660928993. The reversal of 1660928941 is 1498290661.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1494131716 + 166797225 = 38654^2 + 12915^2 .

It is not a de Polignac number, because 1660928941 - 2¹ = 1660928939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1660928891 and 1660928900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660928041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162856 + ... + 172753.

It is an arithmetic number, because the mean of its divisors is an integer number (162603045).

Almost surely, 2^1660928941 is an apocalyptic number.

It is an amenable number.

1660928941 is a deficient number, since it is larger than the sum of its proper divisors (290307599).

1660928941 is a wasteful number, since it uses less digits than its factorization.

1660928941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335724 (or 335717 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1660928941 is about 40754.4959605686. The cubic root of 1660928941 is about 1184.2689719933.

The spelling of 1660928941 in words is "one billion, six hundred sixty million, nine hundred twenty-eight thousand, nine hundred forty-one".