1664012030 has 16 divisors (see below), whose sum is σ = 3007159344. Its totient is φ = 662952000.

The previous prime is 1664011957. The next prime is 1664012033. The reversal of 1664012030 is 302104661.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1664011987 and 1664012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664012033) 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, 328967 + ... + 333986.

It is an arithmetic number, because the mean of its divisors is an integer number (187947459).

Almost surely, 2^1664012030 is an apocalyptic number.

1664012030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1664012030 is a deficient number, since it is larger than the sum of its proper divisors (1343147314).

1664012030 is a wasteful number, since it uses less digits than its factorization.

1664012030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663211.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1664012030 is about 40792.3035632949. The cubic root of 1664012030 is about 1185.0012830314.

Adding to 1664012030 its reverse (302104661), we get a palindrome (1966116691).

The spelling of 1664012030 in words is "one billion, six hundred sixty-four million, twelve thousand, thirty".