1381956 has 12 divisors (see below), whose sum is σ = 3224592. Its totient is φ = 460648.

The previous prime is 1381921. The next prime is 1381967. The reversal of 1381956 is 6591831.

It is a tau number, because it is divible by the number of its divisors (12).

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, 57570 + ... + 57593.

It is an arithmetic number, because the mean of its divisors is an integer number (268716).

2^1381956 is an apocalyptic number.

It is an amenable number.

1381956 is an abundant number, since it is smaller than the sum of its proper divisors (1842636).

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

1381956 is a wasteful number, since it uses less digits than its factorization.

1381956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115170 (or 115168 counting only the distinct ones).

The product of its digits is 6480, while the sum is 33.

The square root of 1381956 is about 1175.5662465382. The cubic root of 1381956 is about 111.3862044250.

The spelling of 1381956 in words is "one million, three hundred eighty-one thousand, nine hundred fifty-six".