1263601053 has 120 divisors (see below), whose sum is σ = 2308854240. Its totient is φ = 678767040.

The previous prime is 1263601051. The next prime is 1263601057. The reversal of 1263601053 is 3501063621.

1263601053 is a `hidden beast` number, since 1 + 2 + 6 + 3 + 601 + 0 + 53 = 666.

It is not a de Polignac number, because 1263601053 - 2¹ = 1263601051 is a prime.

It is a super-2 number, since 2×1263601053² = 3193375242285417618, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263601051) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 21416938 + ... + 21416996.

It is an arithmetic number, because the mean of its divisors is an integer number (19240452).

Almost surely, 2^1263601053 is an apocalyptic number.

1263601053 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1263601053 is a deficient number, since it is larger than the sum of its proper divisors (1045253187).

1263601053 is a wasteful number, since it uses less digits than its factorization.

1263601053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1263601053 is about 35547.1665959469. The cubic root of 1263601053 is about 1081.1102702570.

Adding to 1263601053 its reverse (3501063621), we get a palindrome (4764664674).

The spelling of 1263601053 in words is "one billion, two hundred sixty-three million, six hundred one thousand, fifty-three".