1607144641 has 4 divisors (see below), whose sum is σ = 1611074500. Its totient is φ = 1603214784.

The previous prime is 1607144639. The next prime is 1607144653. The reversal of 1607144641 is 1464417061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1363160241 + 243984400 = 36921^2 + 15620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1607144641 - 2¹ = 1607144639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1607144597 and 1607144606.

It is not an unprimeable number, because it can be changed into a prime (1607144681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1964316 + ... + 1965133.

It is an arithmetic number, because the mean of its divisors is an integer number (402768625).

Almost surely, 2^1607144641 is an apocalyptic number.

It is an amenable number.

1607144641 is a deficient number, since it is larger than the sum of its proper divisors (3929859).

1607144641 is an equidigital number, since it uses as much as digits as its factorization.

1607144641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929858.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1607144641 is about 40089.2085354650. The cubic root of 1607144641 is about 1171.3454318088.

The spelling of 1607144641 in words is "one billion, six hundred seven million, one hundred forty-four thousand, six hundred forty-one".