1604157745 has 16 divisors (see below), whose sum is σ = 2038458240. Its totient is φ = 1208490624.

The previous prime is 1604157727. The next prime is 1604157781. The reversal of 1604157745 is 5477514061.

It is a cyclic number.

It is not a de Polignac number, because 1604157745 - 2¹¹ = 1604155697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1604157698 and 1604157707.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34692 + ... + 66421.

It is an arithmetic number, because the mean of its divisors is an integer number (127403640).

Almost surely, 2^1604157745 is an apocalyptic number.

It is an amenable number.

1604157745 is a deficient number, since it is larger than the sum of its proper divisors (434300495).

1604157745 is a wasteful number, since it uses less digits than its factorization.

1604157745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101304.

The product of its (nonzero) digits is 117600, while the sum is 40.

The square root of 1604157745 is about 40051.9380929313. The cubic root of 1604157745 is about 1170.6193290080.

The spelling of 1604157745 in words is "one billion, six hundred four million, one hundred fifty-seven thousand, seven hundred forty-five".