1263316139 has 8 divisors (see below), whose sum is σ = 1269539568. Its totient is φ = 1257103360.

The previous prime is 1263316129. The next prime is 1263316141. The reversal of 1263316139 is 9316133621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1263316139 is a prime.

It is a super-3 number, since 3×1263316139³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1263316099 and 1263316108.

It is not an unprimeable number, because it can be changed into a prime (1263316129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 334019 + ... + 337779.

It is an arithmetic number, because the mean of its divisors is an integer number (158692446).

Almost surely, 2^1263316139 is an apocalyptic number.

1263316139 is a deficient number, since it is larger than the sum of its proper divisors (6223429).

1263316139 is a wasteful number, since it uses less digits than its factorization.

1263316139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325.

The product of its digits is 17496, while the sum is 35.

The square root of 1263316139 is about 35543.1588213541. The cubic root of 1263316139 is about 1081.0290086899.

The spelling of 1263316139 in words is "one billion, two hundred sixty-three million, three hundred sixteen thousand, one hundred thirty-nine".