15131889469 has 2 divisors, whose sum is σ = 15131889470. Its totient is φ = 15131889468.

The previous prime is 15131889463. The next prime is 15131889523. The reversal of 15131889469 is 96498813151.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15047928900 + 83960569 = 122670^2 + 9163^2 .

It is a cyclic number.

It is not a de Polignac number, because 15131889469 - 2¹⁹ = 15131365181 is a prime.

It is a super-2 number, since 2×15131889469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15131889463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7565944734 + 7565944735.

It is an arithmetic number, because the mean of its divisors is an integer number (7565944735).

Almost surely, 2^15131889469 is an apocalyptic number.

It is an amenable number.

15131889469 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131889469 is an equidigital number, since it uses as much as digits as its factorization.

15131889469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 55.

The spelling of 15131889469 in words is "fifteen billion, one hundred thirty-one million, eight hundred eighty-nine thousand, four hundred sixty-nine".