1609452940 has 12 divisors (see below), whose sum is σ = 3379851216. Its totient is φ = 643781168.

The previous prime is 1609452841. The next prime is 1609452983. The reversal of 1609452940 is 492549061.

It is a junction number, because it is equal to n+sod(n) for n = 1609452893 and 1609452902.

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 3 ways as a sum of consecutive naturals, for example, 40236304 + ... + 40236343.

It is an arithmetic number, because the mean of its divisors is an integer number (281654268).

Almost surely, 2^1609452940 is an apocalyptic number.

1609452940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1609452940 is an abundant number, since it is smaller than the sum of its proper divisors (1770398276).

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

1609452940 is a wasteful number, since it uses less digits than its factorization.

1609452940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80472656 (or 80472654 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 1609452940 is about 40117.9877361764. The cubic root of 1609452940 is about 1171.9059542781.

The spelling of 1609452940 in words is "one billion, six hundred nine million, four hundred fifty-two thousand, nine hundred forty".