1248148621 has 2 divisors, whose sum is σ = 1248148622. Its totient is φ = 1248148620.

The previous prime is 1248148597. The next prime is 1248148637. The reversal of 1248148621 is 1268418421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 751527396 + 496621225 = 27414^2 + 22285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1248148621 - 2¹³ = 1248140429 is a prime.

It is a super-3 number, since 3×1248148621³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1248146621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624074310 + 624074311.

It is an arithmetic number, because the mean of its divisors is an integer number (624074311).

Almost surely, 2^1248148621 is an apocalyptic number.

It is an amenable number.

1248148621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248148621 is an equidigital number, since it uses as much as digits as its factorization.

1248148621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 37.

The square root of 1248148621 is about 35329.1469045037. The cubic root of 1248148621 is about 1076.6852588857.

The spelling of 1248148621 in words is "one billion, two hundred forty-eight million, one hundred forty-eight thousand, six hundred twenty-one".