1601011056 has 20 divisors (see below), whose sum is σ = 4135945352. Its totient is φ = 533670336.

The previous prime is 1601011043. The next prime is 1601011067. The reversal of 1601011056 is 6501101061.

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, 16677151 + ... + 16677246.

Almost surely, 2^1601011056 is an apocalyptic number.

1601011056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1601011056 is an abundant number, since it is smaller than the sum of its proper divisors (2534934296).

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

1601011056 is a wasteful number, since it uses less digits than its factorization.

1601011056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33354408 (or 33354402 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 1601011056 is about 40012.6362040793. The cubic root of 1601011056 is about 1169.8534055503.

The spelling of 1601011056 in words is "one billion, six hundred one million, eleven thousand, fifty-six".