1285149467 has 4 divisors (see below), whose sum is σ = 1468742256. Its totient is φ = 1101556680.

The previous prime is 1285149457. The next prime is 1285149473. The reversal of 1285149467 is 7649415821.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1285149467 - 2⁸ = 1285149211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1285149427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91796384 + ... + 91796397.

It is an arithmetic number, because the mean of its divisors is an integer number (367185564).

Almost surely, 2^1285149467 is an apocalyptic number.

1285149467 is a deficient number, since it is larger than the sum of its proper divisors (183592789).

1285149467 is an equidigital number, since it uses as much as digits as its factorization.

1285149467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183592788.

The product of its digits is 483840, while the sum is 47.

The square root of 1285149467 is about 35848.9813941763. The cubic root of 1285149467 is about 1087.2211196993.

The spelling of 1285149467 in words is "one billion, two hundred eighty-five million, one hundred forty-nine thousand, four hundred sixty-seven".