1601891796 has 24 divisors (see below), whose sum is σ = 3745252000. Its totient is φ = 532891872.

The previous prime is 1601891773. The next prime is 1601891807. The reversal of 1601891796 is 6971981061.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127771 + ... + 139746.

Almost surely, 2^1601891796 is an apocalyptic number.

It is an amenable number.

1601891796 is an abundant number, since it is smaller than the sum of its proper divisors (2143360204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1601891796 is a wasteful number, since it uses less digits than its factorization.

1601891796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268023 (or 268021 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 1601891796 is about 40023.6404641057. The cubic root of 1601891796 is about 1170.0678841466.

The spelling of 1601891796 in words is "one billion, six hundred one million, eight hundred ninety-one thousand, seven hundred ninety-six".