1338938763 has 16 divisors (see below), whose sum is σ = 1887793152. Its totient is φ = 842760000.

The previous prime is 1338938747. The next prime is 1338938779. The reversal of 1338938763 is 3678398331.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1338938747) and next prime (1338938779).

It is not a de Polignac number, because 1338938763 - 2⁴ = 1338938747 is a prime.

It is a super-2 number, since 2×1338938763² = 3585514022127940338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1338938723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171763 + ... + 179388.

It is an arithmetic number, because the mean of its divisors is an integer number (117987072).

Almost surely, 2^1338938763 is an apocalyptic number.

1338938763 is a deficient number, since it is larger than the sum of its proper divisors (548854389).

1338938763 is a wasteful number, since it uses less digits than its factorization.

1338938763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351226.

The product of its digits is 1959552, while the sum is 51.

The square root of 1338938763 is about 36591.5121715405. The cubic root of 1338938763 is about 1102.1826533011.

The spelling of 1338938763 in words is "one billion, three hundred thirty-eight million, nine hundred thirty-eight thousand, seven hundred sixty-three".