1664452031 has 64 divisors (see below), whose sum is σ = 2090188800. Its totient is φ = 1307136000.

The previous prime is 1664452021. The next prime is 1664452051. The reversal of 1664452031 is 1302544661.

It is a cyclic number.

It is not a de Polignac number, because 1664452031 - 2¹⁰ = 1664451007 is a prime.

It is a super-2 number, since 2×1664452031² = 5540801127000049922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664452021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11170745 + ... + 11170893.

It is an arithmetic number, because the mean of its divisors is an integer number (32659200).

Almost surely, 2^1664452031 is an apocalyptic number.

1664452031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1664452031 is a deficient number, since it is larger than the sum of its proper divisors (425736769).

1664452031 is a wasteful number, since it uses less digits than its factorization.

1664452031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1664452031 is about 40797.6963933014. The cubic root of 1664452031 is about 1185.1057205375.

Adding to 1664452031 its reverse (1302544661), we get a palindrome (2966996692).

The spelling of 1664452031 in words is "one billion, six hundred sixty-four million, four hundred fifty-two thousand, thirty-one".