1660122004 has 6 divisors (see below), whose sum is σ = 2905213514. Its totient is φ = 830061000.

The previous prime is 1660121977. The next prime is 1660122049. The reversal of 1660122004 is 4002210661.

It can be written as a sum of positive squares in only one way, i.e., 1277919504 + 382202500 = 35748^2 + 19550^2 .

It is a congruent number.

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 as a sum of consecutive naturals, namely, 207515247 + ... + 207515254.

Almost surely, 2^1660122004 is an apocalyptic number.

It is an amenable number.

1660122004 is a deficient number, since it is larger than the sum of its proper divisors (1245091510).

1660122004 is a wasteful number, since it uses less digits than its factorization.

1660122004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415030505 (or 415030503 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1660122004 is about 40744.5947826212. The cubic root of 1660122004 is about 1184.0771545853.

Adding to 1660122004 its reverse (4002210661), we get a palindrome (5662332665).

The spelling of 1660122004 in words is "one billion, six hundred sixty million, one hundred twenty-two thousand, four".