1609732080 has 120 divisors (see below), whose sum is σ = 5897502000. Its totient is φ = 390236160.

The previous prime is 1609732049. The next prime is 1609732099. The reversal of 1609732080 is 802379061.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×1609732080² = 5182474738762252800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93705 + ... + 109544.

It is an arithmetic number, because the mean of its divisors is an integer number (49145850).

Almost surely, 2^1609732080 is an apocalyptic number.

1609732080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1609732080 is an abundant number, since it is smaller than the sum of its proper divisors (4287769920).

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

1609732080 is a wasteful number, since it uses less digits than its factorization.

1609732080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203279 (or 203270 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 1609732080 is about 40121.4665733943. The cubic root of 1609732080 is about 1171.9737012973.

The spelling of 1609732080 in words is "one billion, six hundred nine million, seven hundred thirty-two thousand, eighty".