1948288949 has 2 divisors, whose sum is σ = 1948288950. Its totient is φ = 1948288948.

The previous prime is 1948288939. The next prime is 1948289027. The reversal of 1948288949 is 9498828491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1917564100 + 30724849 = 43790^2 + 5543^2 .

It is an emirp because it is prime and its reverse (9498828491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1948288949 - 2¹⁶ = 1948223413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1948288891 and 1948288900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1948288939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 974144474 + 974144475.

It is an arithmetic number, because the mean of its divisors is an integer number (974144475).

Almost surely, 2^1948288949 is an apocalyptic number.

It is an amenable number.

1948288949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1948288949 is an equidigital number, since it uses as much as digits as its factorization.

1948288949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11943936, while the sum is 62.

The square root of 1948288949 is about 44139.4262423063. The cubic root of 1948288949 is about 1248.9674564379.

The spelling of 1948288949 in words is "one billion, nine hundred forty-eight million, two hundred eighty-eight thousand, nine hundred forty-nine".