1381149 has 24 divisors (see below), whose sum is σ = 2488512. Its totient is φ = 717120.

The previous prime is 1381147. The next prime is 1381153. The reversal of 1381149 is 9411831.

It is not a de Polignac number, because 1381149 - 2¹ = 1381147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 304 + ... + 1689.

It is an arithmetic number, because the mean of its divisors is an integer number (103688).

2^1381149 is an apocalyptic number.

It is an amenable number.

1381149 is a deficient number, since it is larger than the sum of its proper divisors (1107363).

1381149 is a wasteful number, since it uses less digits than its factorization.

1381149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2017 (or 2014 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1381149 is about 1175.2229575702. Note that the first 3 decimals coincide. The cubic root of 1381149 is about 111.3645186961.

The spelling of 1381149 in words is "one million, three hundred eighty-one thousand, one hundred forty-nine".