10293928681 has 9 divisors (see below), whose sum is σ = 10448267223. Its totient is φ = 10141841640.

The previous prime is 10293928679. The next prime is 10293928703. The reversal of 10293928681 is 18682939201.

The square root of 10293928681 is 101459.

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., 693848281 + 9600080400 = 26341^2 + 97980^2 .

It is not a de Polignac number, because 10293928681 - 2¹ = 10293928679 is a prime.

It is a super-2 number, since 2×10293928681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10293923681) 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, 7202875 + ... + 7204303.

Almost surely, 2^10293928681 is an apocalyptic number.

10293928681 is the 101459-th square number.

10293928681 is the 50730-th centered octagonal number.

It is an amenable number.

10293928681 is a deficient number, since it is larger than the sum of its proper divisors (154338542).

10293928681 is an frugal number, since it uses more digits than its factorization.

10293928681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000 (or 1500 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 49.

Multiplying 10293928681 by its sum of digits (49), we get a square (504402505369 = 710213²).

The spelling of 10293928681 in words is "ten billion, two hundred ninety-three million, nine hundred twenty-eight thousand, six hundred eighty-one".