1285170457 has 8 divisors (see below), whose sum is σ = 1294488000. Its totient is φ = 1275881904.

The previous prime is 1285170433. The next prime is 1285170511. The reversal of 1285170457 is 7540715821.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1285170457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285170407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86019 + ... + 99847.

It is an arithmetic number, because the mean of its divisors is an integer number (161811000).

Almost surely, 2^1285170457 is an apocalyptic number.

It is an amenable number.

1285170457 is a deficient number, since it is larger than the sum of its proper divisors (9317543).

1285170457 is a wasteful number, since it uses less digits than its factorization.

1285170457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14495.

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 1285170457 is about 35849.2741488583. The cubic root of 1285170457 is about 1087.2270387637.

The spelling of 1285170457 in words is "one billion, two hundred eighty-five million, one hundred seventy thousand, four hundred fifty-seven".