1516807890469 has 8 divisors (see below), whose sum is σ = 1661412294360. Its totient is φ = 1378356865536.

The previous prime is 1516807890449. The next prime is 1516807890491. The reversal of 1516807890469 is 9640987086151.

It can be written as a sum of positive squares in 4 ways, for example, as 841677804900 + 675130085569 = 917430^2 + 821663^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1516807890469 - 2¹⁵ = 1516807857701 is a prime.

It is a super-2 number, since 2×1516807890469² (a number of 25 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 1516807890469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1516807890419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1538344224 + ... + 1538345209.

It is an arithmetic number, because the mean of its divisors is an integer number (207676536795).

Almost surely, 2^{1516807890469} is an apocalyptic number.

It is an amenable number.

1516807890469 is a deficient number, since it is larger than the sum of its proper divisors (144604403891).

1516807890469 is a wasteful number, since it uses less digits than its factorization.

1516807890469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076689479.

The product of its (nonzero) digits is 26127360, while the sum is 64.

The spelling of 1516807890469 in words is "one trillion, five hundred sixteen billion, eight hundred seven million, eight hundred ninety thousand, four hundred sixty-nine".