1248947157 has 8 divisors (see below), whose sum is σ = 1665893376. Its totient is φ = 832316192.

The previous prime is 1248947153. The next prime is 1248947171. The reversal of 1248947157 is 7517498421.

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

It is a cyclic number.

It is not a de Polignac number, because 1248947157 - 2² = 1248947153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248947153) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 69408 + ... + 85529.

It is an arithmetic number, because the mean of its divisors is an integer number (208236672).

Almost surely, 2^1248947157 is an apocalyptic number.

It is an amenable number.

1248947157 is a deficient number, since it is larger than the sum of its proper divisors (416946219).

1248947157 is a wasteful number, since it uses less digits than its factorization.

1248947157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157627.

The product of its digits is 564480, while the sum is 48.

The square root of 1248947157 is about 35340.4464742595. The cubic root of 1248947157 is about 1076.9148225334.

The spelling of 1248947157 in words is "one billion, two hundred forty-eight million, nine hundred forty-seven thousand, one hundred fifty-seven".