1381709700 has 216 divisors, whose sum is σ = 5020928640. Its totient is φ = 311270400.

The previous prime is 1381709699. The next prime is 1381709701. The reversal of 1381709700 is 79071831.

It is an interprime number because it is at equal distance from previous prime (1381709699) and next prime (1381709701).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381709701) 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, 445756 + ... + 448844.

It is an arithmetic number, because the mean of its divisors is an integer number (23245040).

Almost surely, 2^1381709700 is an apocalyptic number.

1381709700 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 1381709700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2510464320).

1381709700 is an abundant number, since it is smaller than the sum of its proper divisors (3639218940).

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

1381709700 is a wasteful number, since it uses less digits than its factorization.

1381709700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187 (or 3177 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 1381709700 is about 37171.3559074726. The cubic root of 1381709700 is about 1113.7958673912.

The spelling of 1381709700 in words is "one billion, three hundred eighty-one million, seven hundred nine thousand, seven hundred".