1601586399 has 16 divisors (see below), whose sum is σ = 2568961280. Its totient is φ = 867024000.

The previous prime is 1601586353. The next prime is 1601586419. The reversal of 1601586399 is 9936851061.

It is not a de Polignac number, because 1601586399 - 2¹⁵ = 1601553631 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 (1601586599) 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, 2006602 + ... + 2007399.

It is an arithmetic number, because the mean of its divisors is an integer number (160560080).

Almost surely, 2^1601586399 is an apocalyptic number.

1601586399 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1601586399 is a deficient number, since it is larger than the sum of its proper divisors (967374881).

1601586399 is a wasteful number, since it uses less digits than its factorization.

1601586399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014030.

The product of its (nonzero) digits is 349920, while the sum is 48.

The square root of 1601586399 is about 40019.8250745802. The cubic root of 1601586399 is about 1169.9935225005.

The spelling of 1601586399 in words is "one billion, six hundred one million, five hundred eighty-six thousand, three hundred ninety-nine".