1287071853 has 16 divisors (see below), whose sum is σ = 1818080640. Its totient is φ = 807113216.

The previous prime is 1287071803. The next prime is 1287071861. The reversal of 1287071853 is 3581707821.

1287071853 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1287071853 - 2¹⁶ = 1287006317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1287071803) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97801 + ... + 110177.

It is an arithmetic number, because the mean of its divisors is an integer number (113630040).

Almost surely, 2^1287071853 is an apocalyptic number.

It is an amenable number.

1287071853 is a deficient number, since it is larger than the sum of its proper divisors (531008787).

1287071853 is a wasteful number, since it uses less digits than its factorization.

1287071853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14436.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 1287071853 is about 35875.7836569461. The cubic root of 1287071853 is about 1087.7629548303.

The spelling of 1287071853 in words is "one billion, two hundred eighty-seven million, seventy-one thousand, eight hundred fifty-three".