10219390281 has 27 divisors (see below), whose sum is σ = 15266919213. Its totient is φ = 6587089560.

The previous prime is 10219390267. The next prime is 10219390289. The reversal of 10219390281 is 18209391201.

The square root of 10219390281 is 101091.

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

10219390281 is a `hidden beast` number, since 102 + 193 + 90 + 281 = 666.

It is not a de Polignac number, because 10219390281 - 2⁵ = 10219390249 is a prime.

It is a super-2 number, since 2×10219390281² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10219390289) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 9400920 + ... + 9402006.

Almost surely, 2^10219390281 is an apocalyptic number.

10219390281 is the 101091-st square number.

10219390281 is the 50546-th centered octagonal number.

It is an amenable number.

10219390281 is a deficient number, since it is larger than the sum of its proper divisors (5047528932).

10219390281 is an frugal number, since it uses more digits than its factorization.

10219390281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2242 (or 1121 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

Multiplying 10219390281 by its sum of digits (36), we get a square (367898050116 = 606546²).

The spelling of 10219390281 in words is "ten billion, two hundred nineteen million, three hundred ninety thousand, two hundred eighty-one".