1609878672 has 40 divisors (see below), whose sum is σ = 4620949280. Its totient is φ = 536626080.

The previous prime is 1609878667. The next prime is 1609878689. The reversal of 1609878672 is 2768789061.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 7 ways as a sum of consecutive naturals, for example, 1862854 + ... + 1863717.

It is an arithmetic number, because the mean of its divisors is an integer number (115523732).

Almost surely, 2^1609878672 is an apocalyptic number.

1609878672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1609878672 is an abundant number, since it is smaller than the sum of its proper divisors (3011070608).

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

1609878672 is a wasteful number, since it uses less digits than its factorization.

1609878672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3726588 (or 3726576 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 1609878672 is about 40123.2933842674. The cubic root of 1609878672 is about 1172.0092759034.

The spelling of 1609878672 in words is "one billion, six hundred nine million, eight hundred seventy-eight thousand, six hundred seventy-two".