1609555948 has 48 divisors (see below), whose sum is σ = 3781903104. Its totient is φ = 578859840.

The previous prime is 1609555891. The next prime is 1609555951. The reversal of 1609555948 is 8495559061.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 1609555895 and 1609555904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196990 + ... + 204997.

It is an arithmetic number, because the mean of its divisors is an integer number (78789648).

Almost surely, 2^1609555948 is an apocalyptic number.

It is an amenable number.

1609555948 is an abundant number, since it is smaller than the sum of its proper divisors (2172347156).

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

1609555948 is a wasteful number, since it uses less digits than its factorization.

1609555948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402022 (or 402020 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 52.

The square root of 1609555948 is about 40119.2715287803. The cubic root of 1609555948 is about 1171.9309551361.

The spelling of 1609555948 in words is "one billion, six hundred nine million, five hundred fifty-five thousand, nine hundred forty-eight".