1381950 has 72 divisors (see below), whose sum is σ = 3859128. Its totient is φ = 354240.

The previous prime is 1381921. The next prime is 1381967. The reversal of 1381950 is 591831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16609 + ... + 16691.

It is an arithmetic number, because the mean of its divisors is an integer number (53599).

2^1381950 is an apocalyptic number.

1381950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1929564).

1381950 is an abundant number, since it is smaller than the sum of its proper divisors (2477178).

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

1381950 is a wasteful number, since it uses less digits than its factorization.

1381950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1381950 is about 1175.5636945738. The cubic root of 1381950 is about 111.3860432240.

The spelling of 1381950 in words is "one million, three hundred eighty-one thousand, nine hundred fifty".