1601731445 has 16 divisors (see below), whose sum is σ = 2034439680. Its totient is φ = 1207224000.

The previous prime is 1601731433. The next prime is 1601731457. The reversal of 1601731445 is 5441371061.

It is an interprime number because it is at equal distance from previous prime (1601731433) and next prime (1601731457).

It is not a de Polignac number, because 1601731445 - 2⁴ = 1601731429 is a prime.

It is a congruent number.

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, 29381 + ... + 63770.

It is an arithmetic number, because the mean of its divisors is an integer number (127152480).

Almost surely, 2^1601731445 is an apocalyptic number.

It is an amenable number.

1601731445 is a deficient number, since it is larger than the sum of its proper divisors (432708235).

1601731445 is a wasteful number, since it uses less digits than its factorization.

1601731445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93356.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 1601731445 is about 40021.6372103891. The cubic root of 1601731445 is about 1170.0288411816.

The spelling of 1601731445 in words is "one billion, six hundred one million, seven hundred thirty-one thousand, four hundred forty-five".