1604016145 has 8 divisors (see below), whose sum is σ = 1971766440. Its totient is φ = 1251914880.

The previous prime is 1604016137. The next prime is 1604016149. The reversal of 1604016145 is 5416104061.

It can be written as a sum of positive squares in 4 ways, for example, as 89794576 + 1514221569 = 9476^2 + 38913^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1604016145 - 2³ = 1604016137 is a prime.

It is a super-2 number, since 2×1604016145² = 5145735586841322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1604016149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3912030 + ... + 3912439.

It is an arithmetic number, because the mean of its divisors is an integer number (246470805).

Almost surely, 2^1604016145 is an apocalyptic number.

It is an amenable number.

1604016145 is a deficient number, since it is larger than the sum of its proper divisors (367750295).

1604016145 is an equidigital number, since it uses as much as digits as its factorization.

1604016145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7824515.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1604016145 is about 40050.1703492008. The cubic root of 1604016145 is about 1170.5848842296.

The spelling of 1604016145 in words is "one billion, six hundred four million, sixteen thousand, one hundred forty-five".