1381541 has 8 divisors (see below), whose sum is σ = 1647744. Its totient is φ = 1132560.

The previous prime is 1381537. The next prime is 1381553. The reversal of 1381541 is 1451831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1381541 - 2² = 1381537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 7 ways as a sum of consecutive naturals, for example, 4130 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (205968).

2^1381541 is an apocalyptic number.

It is an amenable number.

1381541 is a deficient number, since it is larger than the sum of its proper divisors (266203).

1381541 is an equidigital number, since it uses as much as digits as its factorization.

1381541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8611.

The product of its digits is 480, while the sum is 23.

The square root of 1381541 is about 1175.3897226027. The cubic root of 1381541 is about 111.3750535869.

The spelling of 1381541 in words is "one million, three hundred eighty-one thousand, five hundred forty-one".