1604545654 has 4 divisors (see below), whose sum is σ = 2406818484. Its totient is φ = 802272826.

The previous prime is 1604545637. The next prime is 1604545661. The reversal of 1604545654 is 4565454061.

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

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 401136412 + ... + 401136415.

It is an arithmetic number, because the mean of its divisors is an integer number (601704621).

Almost surely, 2^1604545654 is an apocalyptic number.

1604545654 is a deficient number, since it is larger than the sum of its proper divisors (802272830).

1604545654 is an equidigital number, since it uses as much as digits as its factorization.

1604545654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802272829.

The product of its (nonzero) digits is 288000, while the sum is 40.

The square root of 1604545654 is about 40056.7803748629. The cubic root of 1604545654 is about 1170.7136790758.

The spelling of 1604545654 in words is "one billion, six hundred four million, five hundred forty-five thousand, six hundred fifty-four".