1029987503689 has 9 divisors (see below), whose sum is σ = 1094157302407. Its totient is φ = 969383765344.

The previous prime is 1029987503669. The next prime is 1029987503719. The reversal of 1029987503689 is 9863057899201.

The square root of 1029987503689 is 1014883.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 801893385225 + 228094118464 = 895485^2 + 477592^2 .

It is not a de Polignac number, because 1029987503689 - 2¹³ = 1029987495497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1029987503669) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 17223162 + ... + 17282860.

Almost surely, 2^{1029987503689} is an apocalyptic number.

1029987503689 is the 1014883-rd square number.

1029987503689 is the 507442-nd centered octagonal number.

It is an amenable number.

1029987503689 is a deficient number, since it is larger than the sum of its proper divisors (64169798718).

1029987503689 is an frugal number, since it uses more digits than its factorization.

1029987503689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119432 (or 59716 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 67.

The spelling of 1029987503689 in words is "one trillion, twenty-nine billion, nine hundred eighty-seven million, five hundred three thousand, six hundred eighty-nine".