1388041338 has 32 divisors (see below), whose sum is σ = 2818564992. Its totient is φ = 455616000.

The previous prime is 1388041331. The next prime is 1388041339. The reversal of 1388041338 is 8331408831.

It is a junction number, because it is equal to n+sod(n) for n = 1388041296 and 1388041305.

It is not an unprimeable number, because it can be changed into a prime (1388041331) 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, 510270 + ... + 512982.

It is an arithmetic number, because the mean of its divisors is an integer number (88080156).

Almost surely, 2^1388041338 is an apocalyptic number.

1388041338 is an abundant number, since it is smaller than the sum of its proper divisors (1430523654).

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

1388041338 is a wasteful number, since it uses less digits than its factorization.

1388041338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990.

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 1388041338 is about 37256.4268012916. The cubic root of 1388041338 is about 1115.4945858932.

The spelling of 1388041338 in words is "one billion, three hundred eighty-eight million, forty-one thousand, three hundred thirty-eight".