1608156240 has 40 divisors (see below), whose sum is σ = 4985285088. Its totient is φ = 428841600.

The previous prime is 1608156233. The next prime is 1608156241. The reversal of 1608156240 is 426518061.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1608156241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350086 + ... + 3350565.

Almost surely, 2^1608156240 is an apocalyptic number.

1608156240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1608156240 is an abundant number, since it is smaller than the sum of its proper divisors (3377128848).

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

1608156240 is a wasteful number, since it uses less digits than its factorization.

1608156240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700667 (or 6700661 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1608156240 is about 40101.8233999403. The cubic root of 1608156240 is about 1171.5911436363.

The spelling of 1608156240 in words is "one billion, six hundred eight million, one hundred fifty-six thousand, two hundred forty".