1249135486 has 8 divisors (see below), whose sum is σ = 1983921120. Its totient is φ = 587828448.

The previous prime is 1249135477. The next prime is 1249135493. The reversal of 1249135486 is 6845319421.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18369606 + ... + 18369673.

It is an arithmetic number, because the mean of its divisors is an integer number (247990140).

Almost surely, 2^1249135486 is an apocalyptic number.

1249135486 is a deficient number, since it is larger than the sum of its proper divisors (734785634).

1249135486 is a wasteful number, since it uses less digits than its factorization.

1249135486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36739298.

The product of its digits is 207360, while the sum is 43.

The square root of 1249135486 is about 35343.1108704370. The cubic root of 1249135486 is about 1076.9689492158.

The spelling of 1249135486 in words is "one billion, two hundred forty-nine million, one hundred thirty-five thousand, four hundred eighty-six".