1263857053 has 2 divisors, whose sum is σ = 1263857054. Its totient is φ = 1263857052.

The previous prime is 1263857047. The next prime is 1263857057. The reversal of 1263857053 is 3507583621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1253372409 + 10484644 = 35403^2 + 3238^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263857053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1263856997 and 1263857015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1263857057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631928526 + 631928527.

It is an arithmetic number, because the mean of its divisors is an integer number (631928527).

Almost surely, 2^1263857053 is an apocalyptic number.

It is an amenable number.

1263857053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1263857053 is an equidigital number, since it uses as much as digits as its factorization.

1263857053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1263857053 is about 35550.7672631689. The cubic root of 1263857053 is about 1081.1832747179.

The spelling of 1263857053 in words is "one billion, two hundred sixty-three million, eight hundred fifty-seven thousand, fifty-three".