1601128432 has 20 divisors (see below), whose sum is σ = 3139564680. Its totient is φ = 790918208.

The previous prime is 1601128411. The next prime is 1601128447. The reversal of 1601128432 is 2348211061.

It is a super-2 number, since 2×1601128432² = 5127224511517557248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1601128432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601507 + ... + 604162.

It is an arithmetic number, because the mean of its divisors is an integer number (156978234).

Almost surely, 2^1601128432 is an apocalyptic number.

It is an amenable number.

1601128432 is a deficient number, since it is larger than the sum of its proper divisors (1538436248).

1601128432 is a wasteful number, since it uses less digits than its factorization.

1601128432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205760 (or 1205754 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1601128432 is about 40014.1029138478. The cubic root of 1601128432 is about 1169.8819936015.

Adding to 1601128432 its reverse (2348211061), we get a palindrome (3949339493).

The spelling of 1601128432 in words is "one billion, six hundred one million, one hundred twenty-eight thousand, four hundred thirty-two".