1601055612 has 48 divisors (see below), whose sum is σ = 4470187680. Its totient is φ = 492632064.

The previous prime is 1601055607. The next prime is 1601055613. The reversal of 1601055612 is 2165501061.

It is a happy number.

1601055612 is a `hidden beast` number, since 1 + 601 + 0 + 5 + 56 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601055613) 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, 568773 + ... + 571580.

It is an arithmetic number, because the mean of its divisors is an integer number (93128910).

Almost surely, 2^1601055612 is an apocalyptic number.

1601055612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1601055612 is an abundant number, since it is smaller than the sum of its proper divisors (2869132068).

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

1601055612 is a wasteful number, since it uses less digits than its factorization.

1601055612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140379 (or 1140371 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1601055612 is about 40013.1929743179. The cubic root of 1601055612 is about 1169.8642577562.

Adding to 1601055612 its reverse (2165501061), we get a palindrome (3766556673).

The spelling of 1601055612 in words is "one billion, six hundred one million, fifty-five thousand, six hundred twelve".