1381774 has 4 divisors (see below), whose sum is σ = 2072664. Its totient is φ = 690886.

The previous prime is 1381769. The next prime is 1381819. The reversal of 1381774 is 4771831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4771831 = 19 ⋅251149.

It is a plaindrome in base 12.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345442 + ... + 345445.

It is an arithmetic number, because the mean of its divisors is an integer number (518166).

2^1381774 is an apocalyptic number.

1381774 is a deficient number, since it is larger than the sum of its proper divisors (690890).

1381774 is an equidigital number, since it uses as much as digits as its factorization.

1381774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690889.

The product of its digits is 4704, while the sum is 31.

The square root of 1381774 is about 1175.4888344855. The cubic root of 1381774 is about 111.3813144528.

The spelling of 1381774 in words is "one million, three hundred eighty-one thousand, seven hundred seventy-four".