1609926428 has 24 divisors (see below), whose sum is σ = 3076360560. Its totient is φ = 731102720.

The previous prime is 1609926371. The next prime is 1609926473. The reversal of 1609926428 is 8246299061.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32300 + ... + 65292.

It is an arithmetic number, because the mean of its divisors is an integer number (128181690).

Almost surely, 2^1609926428 is an apocalyptic number.

It is an amenable number.

1609926428 is a deficient number, since it is larger than the sum of its proper divisors (1466434132).

1609926428 is a wasteful number, since it uses less digits than its factorization.

1609926428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34117 (or 34115 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1609926428 is about 40123.8884955085. Note that the first 3 decimals coincide. The cubic root of 1609926428 is about 1172.0208647522.

The spelling of 1609926428 in words is "one billion, six hundred nine million, nine hundred twenty-six thousand, four hundred twenty-eight".