1664159000 has 64 divisors (see below), whose sum is σ = 4450455360. Its totient is φ = 570566400.

The previous prime is 1664158987. The next prime is 1664159009. The reversal of 1664159000 is 9514661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664159009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111869 + ... + 125868.

It is an arithmetic number, because the mean of its divisors is an integer number (69538365).

Almost surely, 2^1664159000 is an apocalyptic number.

1664159000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1664159000 is an abundant number, since it is smaller than the sum of its proper divisors (2786296360).

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

1664159000 is a wasteful number, since it uses less digits than its factorization.

1664159000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237765 (or 237751 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1664159000 is about 40794.1049662816. The cubic root of 1664159000 is about 1185.0361695002.

The spelling of 1664159000 in words is "one billion, six hundred sixty-four million, one hundred fifty-nine thousand".