1248794557 has 8 divisors (see below), whose sum is σ = 1263240576. Its totient is φ = 1234393392.

The previous prime is 1248794537. The next prime is 1248794597. The reversal of 1248794557 is 7554978421.

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 1248794557 - 2¹¹ = 1248792509 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 (1248794537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46488 + ... + 68254.

It is an arithmetic number, because the mean of its divisors is an integer number (157905072).

Almost surely, 2^1248794557 is an apocalyptic number.

It is an amenable number.

1248794557 is a deficient number, since it is larger than the sum of its proper divisors (14446019).

1248794557 is a wasteful number, since it uses less digits than its factorization.

1248794557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22427.

The product of its digits is 2822400, while the sum is 52.

The square root of 1248794557 is about 35338.2874089846. The cubic root of 1248794557 is about 1076.8709605508.

The spelling of 1248794557 in words is "one billion, two hundred forty-eight million, seven hundred ninety-four thousand, five hundred fifty-seven".