1002681729 has 24 divisors (see below), whose sum is σ = 1667869632. Its totient is φ = 568582560.

The previous prime is 1002681721. The next prime is 1002681731. The reversal of 1002681729 is 9271862001.

It is not a de Polignac number, because 1002681729 - 2³ = 1002681721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1002681693 and 1002681702.

It is not an unprimeable number, because it can be changed into a prime (1002681721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52494 + ... + 68999.

It is an arithmetic number, because the mean of its divisors is an integer number (69494568).

Almost surely, 2^1002681729 is an apocalyptic number.

It is an amenable number.

1002681729 is a deficient number, since it is larger than the sum of its proper divisors (665187903).

1002681729 is a wasteful number, since it uses less digits than its factorization.

1002681729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121637 (or 121634 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1002681729 is about 31665.1500707008. The cubic root of 1002681729 is about 1000.8931117806.

The spelling of 1002681729 in words is "one billion, two million, six hundred eighty-one thousand, seven hundred twenty-nine".