1608155338 has 4 divisors (see below), whose sum is σ = 2412233010. Its totient is φ = 804077668.

The previous prime is 1608155333. The next prime is 1608155401. The reversal of 1608155338 is 8335518061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8335518061 = 13 ⋅641193697.

It can be written as a sum of positive squares in only one way, i.e., 1213616569 + 394538769 = 34837^2 + 19863^2 .

It is a super-2 number, since 2×1608155338² = 5172327182275788488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1608155338.

It is not an unprimeable number, because it can be changed into a prime (1608155333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402038833 + ... + 402038836.

Almost surely, 2^1608155338 is an apocalyptic number.

1608155338 is a deficient number, since it is larger than the sum of its proper divisors (804077672).

1608155338 is an equidigital number, since it uses as much as digits as its factorization.

1608155338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804077671.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 1608155338 is about 40101.8121535673. The cubic root of 1608155338 is about 1171.5909245913.

The spelling of 1608155338 in words is "one billion, six hundred eight million, one hundred fifty-five thousand, three hundred thirty-eight".