1608440354 has 4 divisors (see below), whose sum is σ = 2412660534. Its totient is φ = 804220176.

The previous prime is 1608440341. The next prime is 1608440377. The reversal of 1608440354 is 4530448061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1209439729 + 399000625 = 34777^2 + 19975^2 .

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 as a sum of consecutive naturals, namely, 402110087 + ... + 402110090.

Almost surely, 2^1608440354 is an apocalyptic number.

1608440354 is a deficient number, since it is larger than the sum of its proper divisors (804220180).

1608440354 is an equidigital number, since it uses as much as digits as its factorization.

1608440354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804220179.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 1608440354 is about 40105.3656509949. The cubic root of 1608440354 is about 1171.6601348278.

The spelling of 1608440354 in words is "one billion, six hundred eight million, four hundred forty thousand, three hundred fifty-four".