1664022130 has 16 divisors (see below), whose sum is σ = 2996149464. Its totient is φ = 665406720.

The previous prime is 1664022121. The next prime is 1664022133. The reversal of 1664022130 is 312204661.

It can be written as a sum of positive squares in 4 ways, for example, as 814474521 + 849547609 = 28539^2 + 29147^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1664022095 and 1664022104.

It is not an unprimeable number, because it can be changed into a prime (1664022133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11914 + ... + 58906.

Almost surely, 2^1664022130 is an apocalyptic number.

1664022130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664022130 is a deficient number, since it is larger than the sum of its proper divisors (1332127334).

1664022130 is a wasteful number, since it uses less digits than its factorization.

1664022130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50541.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1664022130 is about 40792.4273609698. The cubic root of 1664022130 is about 1185.0036805478.

Adding to 1664022130 its reverse (312204661), we get a palindrome (1976226791).

The spelling of 1664022130 in words is "one billion, six hundred sixty-four million, twenty-two thousand, one hundred thirty".