1648487077 has 2 divisors, whose sum is σ = 1648487078. Its totient is φ = 1648487076.

The previous prime is 1648487033. The next prime is 1648487111. The reversal of 1648487077 is 7707848461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 890365921 + 758121156 = 29839^2 + 27534^2 .

It is an emirp because it is prime and its reverse (7707848461) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1648487077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1648287077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824243538 + 824243539.

It is an arithmetic number, because the mean of its divisors is an integer number (824243539).

Almost surely, 2^1648487077 is an apocalyptic number.

It is an amenable number.

1648487077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648487077 is an equidigital number, since it uses as much as digits as its factorization.

1648487077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2107392, while the sum is 52.

The square root of 1648487077 is about 40601.5649575235. The cubic root of 1648487077 is about 1181.3044745107.

The spelling of 1648487077 in words is "one billion, six hundred forty-eight million, four hundred eighty-seven thousand, seventy-seven".