1381081 has 16 divisors (see below), whose sum is σ = 1612800. Its totient is φ = 1172160.

The previous prime is 1381069. The next prime is 1381103. The reversal of 1381081 is 1801831.

It is a cyclic number.

It is not a de Polignac number, because 1381081 - 2¹⁵ = 1348313 is a prime.

It is a super-2 number, since 2×1381081² = 3814769457122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1381381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9195 + ... + 9343.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2^1381081 is an apocalyptic number.

It is an amenable number.

1381081 is a deficient number, since it is larger than the sum of its proper divisors (231719).

1381081 is a wasteful number, since it uses less digits than its factorization.

1381081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 1381081 is about 1175.1940265335. The cubic root of 1381081 is about 111.3626910121.

The spelling of 1381081 in words is "one million, three hundred eighty-one thousand, eighty-one".