853187487 has 16 divisors (see below), whose sum is σ = 1175872512. Its totient is φ = 549696960.

The previous prime is 853187479. The next prime is 853187509. The reversal of 853187487 is 784781358.

It is not a de Polignac number, because 853187487 - 2³ = 853187479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853187407) 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, 67363 + ... + 79019.

It is an arithmetic number, because the mean of its divisors is an integer number (73492032).

Almost surely, 2^853187487 is an apocalyptic number.

853187487 is a deficient number, since it is larger than the sum of its proper divisors (322685025).

853187487 is a wasteful number, since it uses less digits than its factorization.

853187487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12478.

The product of its digits is 1505280, while the sum is 51.

The square root of 853187487 is about 29209.3732729752. The cubic root of 853187487 is about 948.4508406345.

The spelling of 853187487 in words is "eight hundred fifty-three million, one hundred eighty-seven thousand, four hundred eighty-seven".