1248768261 has 24 divisors (see below), whose sum is σ = 1953413280. Its totient is φ = 764166816.

The previous prime is 1248768259. The next prime is 1248768281. The reversal of 1248768261 is 1628678421.

It is not a de Polignac number, because 1248768261 - 2¹ = 1248768259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248768281) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8871 + ... + 50756.

It is an arithmetic number, because the mean of its divisors is an integer number (81392220).

Almost surely, 2^1248768261 is an apocalyptic number.

It is an amenable number.

1248768261 is a deficient number, since it is larger than the sum of its proper divisors (704645019).

1248768261 is a wasteful number, since it uses less digits than its factorization.

1248768261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59825 (or 59822 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 1248768261 is about 35337.9153459850. The cubic root of 1248768261 is about 1076.8634019022.

The spelling of 1248768261 in words is "one billion, two hundred forty-eight million, seven hundred sixty-eight thousand, two hundred sixty-one".