1285113447 has 6 divisors (see below), whose sum is σ = 1856274992. Its totient is φ = 856742292.

The previous prime is 1285113409. The next prime is 1285113451. The reversal of 1285113447 is 7443115821.

It is not a de Polignac number, because 1285113447 - 2²⁷ = 1150895719 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1285113407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 71395183 + ... + 71395200.

Almost surely, 2^1285113447 is an apocalyptic number.

1285113447 is a deficient number, since it is larger than the sum of its proper divisors (571161545).

1285113447 is a wasteful number, since it uses less digits than its factorization.

1285113447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142790389 (or 142790386 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 1285113447 is about 35848.4790053916. The cubic root of 1285113447 is about 1087.2109621077.

The spelling of 1285113447 in words is "one billion, two hundred eighty-five million, one hundred thirteen thousand, four hundred forty-seven".