1499173985 has 8 divisors (see below), whose sum is σ = 1904832936. Its totient is φ = 1128789760.

The previous prime is 1499173927. The next prime is 1499173997. The reversal of 1499173985 is 5893719941.

It can be written as a sum of positive squares in 4 ways, for example, as 689430049 + 809743936 = 26257^2 + 28456^2 .

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

It is not a de Polignac number, because 1499173985 - 2⁸ = 1499173729 is a prime.

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 1499173985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8818586 + ... + 8818755.

It is an arithmetic number, because the mean of its divisors is an integer number (238104117).

Almost surely, 2^1499173985 is an apocalyptic number.

It is an amenable number.

1499173985 is a deficient number, since it is larger than the sum of its proper divisors (405658951).

1499173985 is a wasteful number, since it uses less digits than its factorization.

1499173985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17637363.

The product of its digits is 2449440, while the sum is 56.

The square root of 1499173985 is about 38719.1681857966. The cubic root of 1499173985 is about 1144.5040814972.

The spelling of 1499173985 in words is "one billion, four hundred ninety-nine million, one hundred seventy-three thousand, nine hundred eighty-five".