1660402022 has 4 divisors (see below), whose sum is σ = 2490603036. Its totient is φ = 830201010.

The previous prime is 1660402021. The next prime is 1660402049. The reversal of 1660402022 is 2202040661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2202040661 = 53 ⋅41547937.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660402021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415100504 + ... + 415100507.

It is an arithmetic number, because the mean of its divisors is an integer number (622650759).

Almost surely, 2^1660402022 is an apocalyptic number.

1660402022 is a deficient number, since it is larger than the sum of its proper divisors (830201014).

1660402022 is an equidigital number, since it uses as much as digits as its factorization.

1660402022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830201013.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1660402022 is about 40748.0308972102. The cubic root of 1660402022 is about 1184.1437248486.

Adding to 1660402022 its reverse (2202040661), we get a palindrome (3862442683).

The spelling of 1660402022 in words is "one billion, six hundred sixty million, four hundred two thousand, twenty-two".