1608196490 has 32 divisors (see below), whose sum is σ = 3029121360. Its totient is φ = 614075904.

The previous prime is 1608196489. The next prime is 1608196493. The reversal of 1608196490 is 946918061.

It can be written as a sum of positive squares in 8 ways, for example, as 1531861321 + 76335169 = 39139^2 + 8737^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1608196493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21395 + ... + 60614.

Almost surely, 2^1608196490 is an apocalyptic number.

1608196490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1608196490 is a deficient number, since it is larger than the sum of its proper divisors (1420924870).

1608196490 is a wasteful number, since it uses less digits than its factorization.

1608196490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82106.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1608196490 is about 40102.3252443047. The cubic root of 1608196490 is about 1171.6009180079.

The spelling of 1608196490 in words is "one billion, six hundred eight million, one hundred ninety-six thousand, four hundred ninety".