1601039999 has 16 divisors (see below), whose sum is σ = 1753284288. Its totient is φ = 1453151232.

The previous prime is 1601039939. The next prime is 1601040013. The reversal of 1601039999 is 9999301061.

It is not a de Polignac number, because 1601039999 - 2¹² = 1601035903 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 (1601039939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193934 + ... + 202020.

It is an arithmetic number, because the mean of its divisors is an integer number (109580268).

Almost surely, 2^1601039999 is an apocalyptic number.

1601039999 is a deficient number, since it is larger than the sum of its proper divisors (152244289).

1601039999 is a wasteful number, since it uses less digits than its factorization.

1601039999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8354.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 1601039999 is about 40012.9978756903. The cubic root of 1601039999 is about 1169.8604550255.

The spelling of 1601039999 in words is "one billion, six hundred one million, thirty-nine thousand, nine hundred ninety-nine".