1388945463 has 4 divisors (see below), whose sum is σ = 1851927288. Its totient is φ = 925963640.

The previous prime is 1388945461. The next prime is 1388945473. The reversal of 1388945463 is 3645498831.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1388945463 - 2¹ = 1388945461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388945461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231490908 + ... + 231490913.

It is an arithmetic number, because the mean of its divisors is an integer number (462981822).

Almost surely, 2^1388945463 is an apocalyptic number.

1388945463 is a deficient number, since it is larger than the sum of its proper divisors (462981825).

1388945463 is an equidigital number, since it uses as much as digits as its factorization.

1388945463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462981824.

The product of its digits is 2488320, while the sum is 51.

The square root of 1388945463 is about 37268.5586386165. The cubic root of 1388945463 is about 1115.7367322942.

The spelling of 1388945463 in words is "one billion, three hundred eighty-eight million, nine hundred forty-five thousand, four hundred sixty-three".