1388887376 has 20 divisors (see below), whose sum is σ = 2736580800. Its totient is φ = 682672992.

The previous prime is 1388887363. The next prime is 1388887417. The reversal of 1388887376 is 6737888831.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 734696 + ... + 736583.

It is an arithmetic number, because the mean of its divisors is an integer number (136829040).

Almost surely, 2^1388887376 is an apocalyptic number.

1388887376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1388887376 is a deficient number, since it is larger than the sum of its proper divisors (1347693424).

1388887376 is a wasteful number, since it uses less digits than its factorization.

1388887376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471346 (or 1471340 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 59.

The square root of 1388887376 is about 37267.7793274566. The cubic root of 1388887376 is about 1115.7211783591.

The spelling of 1388887376 in words is "one billion, three hundred eighty-eight million, eight hundred eighty-seven thousand, three hundred seventy-six".