1601607743 has 4 divisors (see below), whose sum is σ = 1601755200. Its totient is φ = 1601460288.

The previous prime is 1601607727. The next prime is 1601607773. The reversal of 1601607743 is 3477061061.

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

It is a cyclic number.

It is not a de Polignac number, because 1601607743 - 2⁴ = 1601607727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601607773) 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, 56018 + ... + 79631.

It is an arithmetic number, because the mean of its divisors is an integer number (400438800).

Almost surely, 2^1601607743 is an apocalyptic number.

1601607743 is a deficient number, since it is larger than the sum of its proper divisors (147457).

1601607743 is a wasteful number, since it uses less digits than its factorization.

1601607743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147456.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 1601607743 is about 40020.0917415240. The cubic root of 1601607743 is about 1169.9987198954.

The spelling of 1601607743 in words is "one billion, six hundred one million, six hundred seven thousand, seven hundred forty-three".