1601112440 has 32 divisors (see below), whose sum is σ = 3616224480. Its totient is φ = 638005632.

The previous prime is 1601112427. The next prime is 1601112449. The reversal of 1601112440 is 442111061.

It is a super-2 number, since 2×1601112440² = 5127122091045507200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601112449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65579 + ... + 86618.

It is an arithmetic number, because the mean of its divisors is an integer number (113007015).

Almost surely, 2^1601112440 is an apocalyptic number.

1601112440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601112440 is an abundant number, since it is smaller than the sum of its proper divisors (2015112040).

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

1601112440 is a wasteful number, since it uses less digits than its factorization.

1601112440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152471 (or 152467 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 1601112440 is about 40013.9030838033. The cubic root of 1601112440 is about 1169.8780986786.

The spelling of 1601112440 in words is "one billion, six hundred one million, one hundred twelve thousand, four hundred forty".