1601996724 has 48 divisors (see below), whose sum is σ = 4192171200. Its totient is φ = 529004448.

The previous prime is 1601996719. The next prime is 1601996729. The reversal of 1601996724 is 4276991061.

It is an interprime number because it is at equal distance from previous prime (1601996719) and next prime (1601996729).

It is a self number, because there is not a number n which added to its sum of digits gives 1601996724.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601996729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57759 + ... + 80870.

It is an arithmetic number, because the mean of its divisors is an integer number (87336900).

Almost surely, 2^1601996724 is an apocalyptic number.

It is an amenable number.

1601996724 is an abundant number, since it is smaller than the sum of its proper divisors (2590174476).

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

1601996724 is a wasteful number, since it uses less digits than its factorization.

1601996724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138749 (or 138741 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 1601996724 is about 40024.9512679279. The cubic root of 1601996724 is about 1170.0934310661.

The spelling of 1601996724 in words is "one billion, six hundred one million, nine hundred ninety-six thousand, seven hundred twenty-four".