1601356512 has 96 divisors (see below), whose sum is σ = 4829352192. Its totient is φ = 455122944.

The previous prime is 1601356501. The next prime is 1601356529. The reversal of 1601356512 is 2156531061.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1601356512² = 5128685357049612288, 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 1601356512.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123523 + ... + 135869.

It is an arithmetic number, because the mean of its divisors is an integer number (50305752).

Almost surely, 2^1601356512 is an apocalyptic number.

1601356512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601356512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2414676096).

1601356512 is an abundant number, since it is smaller than the sum of its proper divisors (3227995680).

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

1601356512 is a wasteful number, since it uses less digits than its factorization.

1601356512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12560 (or 12552 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1601356512 is about 40016.9528075290. The cubic root of 1601356512 is about 1169.9375406792.

Adding to 1601356512 its reverse (2156531061), we get a palindrome (3757887573).

The spelling of 1601356512 in words is "one billion, six hundred one million, three hundred fifty-six thousand, five hundred twelve".