1601307640 has 16 divisors (see below), whose sum is σ = 3602942280. Its totient is φ = 640523040.

The previous prime is 1601307611. The next prime is 1601307647. The reversal of 1601307640 is 467031061.

It is a junction number, because it is equal to n+sod(n) for n = 1601307599 and 1601307608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601307647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20016306 + ... + 20016385.

Almost surely, 2^1601307640 is an apocalyptic number.

1601307640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601307640 is an abundant number, since it is smaller than the sum of its proper divisors (2001634640).

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

1601307640 is a wasteful number, since it uses less digits than its factorization.

1601307640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40032702 (or 40032698 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1601307640 is about 40016.3421616719. The cubic root of 1601307640 is about 1169.9256387346.

The spelling of 1601307640 in words is "one billion, six hundred one million, three hundred seven thousand, six hundred forty".