1601325687 has 8 divisors (see below), whose sum is σ = 2299339504. Its totient is φ = 985431168.

The previous prime is 1601325637. The next prime is 1601325689. The reversal of 1601325687 is 7865231061.

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

It is not a de Polignac number, because 1601325687 - 2⁷ = 1601325559 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 41059633 = 1601325687 / (1 + 6 + 0 + 1 + 3 + 2 + 5 + 6 + 8 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601325689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20529778 + ... + 20529855.

It is an arithmetic number, because the mean of its divisors is an integer number (287417438).

Almost surely, 2^1601325687 is an apocalyptic number.

1601325687 is a deficient number, since it is larger than the sum of its proper divisors (698013817).

1601325687 is a wasteful number, since it uses less digits than its factorization.

1601325687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41059649.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 1601325687 is about 40016.5676564095. The cubic root of 1601325687 is about 1169.9300338028.

The spelling of 1601325687 in words is "one billion, six hundred one million, three hundred twenty-five thousand, six hundred eighty-seven".