1386387900 has 216 divisors, whose sum is σ = 4587623040. Its totient is φ = 363061440.

The previous prime is 1386387887. The next prime is 1386387907. The reversal of 1386387900 is 97836831.

It is a happy number.

1386387900 is a `hidden beast` number, since 1 + 3 + 8 + 638 + 7 + 9 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386387907) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1433217 + ... + 1434183.

Almost surely, 2^1386387900 is an apocalyptic number.

1386387900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386387900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2293811520).

1386387900 is an abundant number, since it is smaller than the sum of its proper divisors (3201235140).

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

1386387900 is a wasteful number, since it uses less digits than its factorization.

1386387900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055 (or 1036 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1386387900 is about 37234.2302189800. The cubic root of 1386387900 is about 1115.0514833421.

The spelling of 1386387900 in words is "one billion, three hundred eighty-six million, three hundred eighty-seven thousand, nine hundred".