1600432401 has 16 divisors (see below), whose sum is σ = 2147552064. Its totient is φ = 1060153344.

The previous prime is 1600432387. The next prime is 1600432403. The reversal of 1600432401 is 1042340061.

It is not a de Polignac number, because 1600432401 - 2¹¹ = 1600430353 is a prime.

It is a super-2 number, since 2×1600432401² = 5122767740341249602, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1600432403) 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, 390901 + ... + 394973.

It is an arithmetic number, because the mean of its divisors is an integer number (134222004).

Almost surely, 2^1600432401 is an apocalyptic number.

It is an amenable number.

1600432401 is a deficient number, since it is larger than the sum of its proper divisors (547119663).

1600432401 is a wasteful number, since it uses less digits than its factorization.

1600432401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4880.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1600432401 is about 40005.4046473723. The cubic root of 1600432401 is about 1169.7124481447.

Adding to 1600432401 its reverse (1042340061), we get a palindrome (2642772462).

The spelling of 1600432401 in words is "one billion, six hundred million, four hundred thirty-two thousand, four hundred one".