1660464442 has 64 divisors (see below), whose sum is σ = 3129444864. Its totient is φ = 643334400.

The previous prime is 1660464437. The next prime is 1660464451. The reversal of 1660464442 is 2444640661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1892908 + ... + 1893784.

It is an arithmetic number, because the mean of its divisors is an integer number (48897576).

Almost surely, 2^1660464442 is an apocalyptic number.

1660464442 is a deficient number, since it is larger than the sum of its proper divisors (1468980422).

1660464442 is a wasteful number, since it uses less digits than its factorization.

1660464442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103.

The product of its (nonzero) digits is 110592, while the sum is 37.

The square root of 1660464442 is about 40748.7968165932. The cubic root of 1660464442 is about 1184.1585632881.

The spelling of 1660464442 in words is "one billion, six hundred sixty million, four hundred sixty-four thousand, four hundred forty-two".