1664011932 has 48 divisors (see below), whose sum is σ = 4293714432. Its totient is φ = 497335680.

The previous prime is 1664011919. The next prime is 1664011949. The reversal of 1664011932 is 2391104661.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 1664011893 and 1664011902.

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 in 15 ways as a sum of consecutive naturals, for example, 76708 + ... + 95979.

It is an arithmetic number, because the mean of its divisors is an integer number (89452384).

Almost surely, 2^1664011932 is an apocalyptic number.

1664011932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1664011932 is an abundant number, since it is smaller than the sum of its proper divisors (2629702500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1664011932 is a wasteful number, since it uses less digits than its factorization.

1664011932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172778 (or 172776 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1664011932 is about 40792.3023620879. The cubic root of 1664011932 is about 1185.0012597683.

The spelling of 1664011932 in words is "one billion, six hundred sixty-four million, eleven thousand, nine hundred thirty-two".