1948281757 has 2 divisors, whose sum is σ = 1948281758. Its totient is φ = 1948281756.

The previous prime is 1948281737. The next prime is 1948281761. The reversal of 1948281757 is 7571828491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1569823641 + 378458116 = 39621^2 + 19454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1948281757 - 2¹¹ = 1948279709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1948281737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974140878 + 974140879.

It is an arithmetic number, because the mean of its divisors is an integer number (974140879).

Almost surely, 2^1948281757 is an apocalyptic number.

It is an amenable number.

1948281757 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948281757 is an equidigital number, since it uses as much as digits as its factorization.

1948281757 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 52.

The square root of 1948281757 is about 44139.3447731160. The cubic root of 1948281757 is about 1248.9659196048.

The spelling of 1948281757 in words is "one billion, nine hundred forty-eight million, two hundred eighty-one thousand, seven hundred fifty-seven".