1601972340 has 24 divisors (see below), whose sum is σ = 4485522720. Its totient is φ = 427192608.

The previous prime is 1601972297. The next prime is 1601972347. The reversal of 1601972340 is 432791061.

It is a super-3 number, since 3×1601972340³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601972347) 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 7 ways as a sum of consecutive naturals, for example, 13349710 + ... + 13349829.

It is an arithmetic number, because the mean of its divisors is an integer number (186896780).

Almost surely, 2^1601972340 is an apocalyptic number.

1601972340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1601972340 is an abundant number, since it is smaller than the sum of its proper divisors (2883550380).

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

1601972340 is a wasteful number, since it uses less digits than its factorization.

1601972340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26699551 (or 26699549 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 1601972340 is about 40024.6466567789. The cubic root of 1601972340 is about 1170.0874943700.

The spelling of 1601972340 in words is "one billion, six hundred one million, nine hundred seventy-two thousand, three hundred forty".