1388897203 has 18 divisors (see below), whose sum is σ = 1469268996. Its totient is φ = 1312575264.

The previous prime is 1388897149. The next prime is 1388897221. The reversal of 1388897203 is 3027988831.

It is not a de Polignac number, because 1388897203 - 2¹³ = 1388889011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1388297203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8846401 + ... + 8846557.

Almost surely, 2^1388897203 is an apocalyptic number.

1388897203 is a deficient number, since it is larger than the sum of its proper divisors (80371793).

1388897203 is an frugal number, since it uses more digits than its factorization.

1388897203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 1388897203 is about 37267.9111703353. The cubic root of 1388897203 is about 1115.7238097618.

The spelling of 1388897203 in words is "one billion, three hundred eighty-eight million, eight hundred ninety-seven thousand, two hundred three".