1601001136 has 20 divisors (see below), whose sum is σ = 3545074192. Its totient is φ = 686143296.

The previous prime is 1601001119. The next prime is 1601001139. The reversal of 1601001136 is 6311001061.

It is not an unprimeable number, because it can be changed into a prime (1601001139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7147215 + ... + 7147438.

Almost surely, 2^1601001136 is an apocalyptic number.

1601001136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1601001136 is an abundant number, since it is smaller than the sum of its proper divisors (1944073056).

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

1601001136 is a wasteful number, since it uses less digits than its factorization.

1601001136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14294668 (or 14294662 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1601001136 is about 40012.5122430472. The cubic root of 1601001136 is about 1169.8509893751.

Adding to 1601001136 its reverse (6311001061), we get a palindrome (7912002197).

The spelling of 1601001136 in words is "one billion, six hundred one million, one thousand, one hundred thirty-six".