1660533242 has 16 divisors (see below), whose sum is σ = 2638127232. Its totient is φ = 781187520.

The previous prime is 1660533239. The next prime is 1660533269. The reversal of 1660533242 is 2423350661.

It is a junction number, because it is equal to n+sod(n) for n = 1660533199 and 1660533208.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157517 + ... + 167727.

It is an arithmetic number, because the mean of its divisors is an integer number (164882952).

Almost surely, 2^1660533242 is an apocalyptic number.

1660533242 is a deficient number, since it is larger than the sum of its proper divisors (977593990).

1660533242 is a wasteful number, since it uses less digits than its factorization.

1660533242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15013.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 1660533242 is about 40749.6410045536. The cubic root of 1660533242 is about 1184.1749179461.

The spelling of 1660533242 in words is "one billion, six hundred sixty million, five hundred thirty-three thousand, two hundred forty-two".