1263327438 has 16 divisors (see below), whose sum is σ = 2608160256. Its totient is φ = 407524920.

The previous prime is 1263327437. The next prime is 1263327449. The reversal of 1263327438 is 8347233621.

It is a junction number, because it is equal to n+sod(n) for n = 1263327396 and 1263327405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1263327431) 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, 3395856 + ... + 3396227.

It is an arithmetic number, because the mean of its divisors is an integer number (163010016).

Almost surely, 2^1263327438 is an apocalyptic number.

1263327438 is an abundant number, since it is smaller than the sum of its proper divisors (1344832818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263327438 is a wasteful number, since it uses less digits than its factorization.

1263327438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792119.

The product of its digits is 145152, while the sum is 39.

The square root of 1263327438 is about 35543.3177686046. The cubic root of 1263327438 is about 1081.0322315597.

The spelling of 1263327438 in words is "one billion, two hundred sixty-three million, three hundred twenty-seven thousand, four hundred thirty-eight".