1388871043 has 12 divisors (see below), whose sum is σ = 1616565600. Its totient is φ = 1189768272.

The previous prime is 1388871041. The next prime is 1388871047. The reversal of 1388871043 is 3401788831.

It is not a de Polignac number, because 1388871043 - 2¹ = 1388871041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1388871041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88230 + ... + 102772.

It is an arithmetic number, because the mean of its divisors is an integer number (134713800).

Almost surely, 2^1388871043 is an apocalyptic number.

1388871043 is a deficient number, since it is larger than the sum of its proper divisors (227694557).

1388871043 is a wasteful number, since it uses less digits than its factorization.

1388871043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16506 (or 16499 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 1388871043 is about 37267.5601965033. The cubic root of 1388871043 is about 1115.7168047994.

The spelling of 1388871043 in words is "one billion, three hundred eighty-eight million, eight hundred seventy-one thousand, forty-three".