1381437 has 12 divisors (see below), whose sum is σ = 2113020. Its totient is φ = 866688.

The previous prime is 1381427. The next prime is 1381439. The reversal of 1381437 is 7341831.

It can be written as a sum of positive squares in 2 ways, for example, as 1285956 + 95481 = 1134^2 + 309^2 .

It is not a de Polignac number, because 1381437 - 2⁴ = 1381421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1381437.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4362 + ... + 4667.

It is an arithmetic number, because the mean of its divisors is an integer number (176085).

2^1381437 is an apocalyptic number.

1381437 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1381437 is a deficient number, since it is larger than the sum of its proper divisors (731583).

1381437 is a wasteful number, since it uses less digits than its factorization.

1381437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9052 (or 9049 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1381437 is about 1175.3454811246. The cubic root of 1381437 is about 111.3722588101.

The spelling of 1381437 in words is "one million, three hundred eighty-one thousand, four hundred thirty-seven".