1601601612 has 48 divisors (see below), whose sum is σ = 4027531872. Its totient is φ = 492433920.

The previous prime is 1601601611. The next prime is 1601601613. The reversal of 1601601612 is 2161061061.

It is an interprime number because it is at equal distance from previous prime (1601601611) and next prime (1601601613).

It is not an unprimeable number, because it can be changed into a prime (1601601611) 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, 268648 + ... + 274544.

It is an arithmetic number, because the mean of its divisors is an integer number (83906914).

Almost surely, 2^1601601612 is an apocalyptic number.

1601601612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1601601612 is an abundant number, since it is smaller than the sum of its proper divisors (2425930260).

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

1601601612 is a wasteful number, since it uses less digits than its factorization.

1601601612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658 (or 7656 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1601601612 is about 40020.0151424259. The cubic root of 1601601612 is about 1169.9972269640.

Adding to 1601601612 its reverse (2161061061), we get a palindrome (3762662673).

The spelling of 1601601612 in words is "one billion, six hundred one million, six hundred one thousand, six hundred twelve".