10390509181 has 16 divisors (see below), whose sum is σ = 11257248240. Its totient is φ = 9533583360.

The previous prime is 10390509163. The next prime is 10390509197. The reversal of 10390509181 is 18190509301.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 95160025 + 10295349156 = 9755^2 + 101466^2 .

It is a cyclic number.

It is not a de Polignac number, because 10390509181 - 2¹⁵ = 10390476413 is a prime.

It is a super-2 number, since 2×10390509181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10390509181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10390509781) 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, 1578465 + ... + 1585033.

It is an arithmetic number, because the mean of its divisors is an integer number (703578015).

Almost surely, 2^10390509181 is an apocalyptic number.

It is an amenable number.

10390509181 is a deficient number, since it is larger than the sum of its proper divisors (866739059).

10390509181 is a wasteful number, since it uses less digits than its factorization.

10390509181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7296.

The product of its (nonzero) digits is 9720, while the sum is 37.

The spelling of 10390509181 in words is "ten billion, three hundred ninety million, five hundred nine thousand, one hundred eighty-one".