1248605081 has 2 divisors, whose sum is σ = 1248605082. Its totient is φ = 1248605080.

The previous prime is 1248605053. The next prime is 1248605087. The reversal of 1248605081 is 1805068421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 744198400 + 504406681 = 27280^2 + 22459^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248605081 - 2¹⁴ = 1248588697 is a prime.

It is a super-2 number, since 2×1248605081² = 3118029296598033122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1248605087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624302540 + 624302541.

It is an arithmetic number, because the mean of its divisors is an integer number (624302541).

Almost surely, 2^1248605081 is an apocalyptic number.

It is an amenable number.

1248605081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248605081 is an equidigital number, since it uses as much as digits as its factorization.

1248605081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 1248605081 is about 35335.6064190216. The cubic root of 1248605081 is about 1076.8164942867.

The spelling of 1248605081 in words is "one billion, two hundred forty-eight million, six hundred five thousand, eighty-one".