1604455245 has 48 divisors (see below), whose sum is σ = 2834340912. Its totient is φ = 839393280.

The previous prime is 1604455219. The next prime is 1604455249. The reversal of 1604455245 is 5425544061.

1604455245 is a `hidden beast` number, since 1 + 60 + 4 + 4 + 552 + 45 = 666.

1604455245 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 234641124 + 1369814121 = 15318^2 + 37011^2 .

It is not a de Polignac number, because 1604455245 - 2⁵ = 1604455213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604455249) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1583359 + ... + 1584371.

It is an arithmetic number, because the mean of its divisors is an integer number (59048769).

Almost surely, 2^1604455245 is an apocalyptic number.

1604455245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1604455245 is a deficient number, since it is larger than the sum of its proper divisors (1229885667).

1604455245 is a wasteful number, since it uses less digits than its factorization.

1604455245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

The square root of 1604455245 is about 40055.6518483971. The cubic root of 1604455245 is about 1170.6916904959.

It can be divided in two parts, 16044 and 55245, that added together give a square (71289 = 267²).

The spelling of 1604455245 in words is "one billion, six hundred four million, four hundred fifty-five thousand, two hundred forty-five".