1499887885 has 4 divisors (see below), whose sum is σ = 1799865468. Its totient is φ = 1199910304.

The previous prime is 1499887867. The next prime is 1499887901. The reversal of 1499887885 is 5887889941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5887889941 = 2837 ⋅2075393.

It can be written as a sum of positive squares in 2 ways, for example, as 844425481 + 655462404 = 29059^2 + 25602^2 .

It is a cyclic number.

It is not a de Polignac number, because 1499887885 - 2¹¹ = 1499885837 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 1499887885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149988784 + ... + 149988793.

It is an arithmetic number, because the mean of its divisors is an integer number (449966367).

Almost surely, 2^1499887885 is an apocalyptic number.

It is an amenable number.

1499887885 is a deficient number, since it is larger than the sum of its proper divisors (299977583).

1499887885 is an equidigital number, since it uses as much as digits as its factorization.

1499887885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299977582.

The product of its digits is 46448640, while the sum is 67.

The square root of 1499887885 is about 38728.3860366011. The cubic root of 1499887885 is about 1144.6857219233.

The spelling of 1499887885 in words is "one billion, four hundred ninety-nine million, eight hundred eighty-seven thousand, eight hundred eighty-five".