1381534 has 16 divisors (see below), whose sum is σ = 2583936. Its totient is φ = 538200.

The previous prime is 1381529. The next prime is 1381537. The reversal of 1381534 is 4351831.

It is a junction number, because it is equal to n+sod(n) for n = 1381499 and 1381508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381537) 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, 4332 + ... + 4639.

It is an arithmetic number, because the mean of its divisors is an integer number (161496).

2^1381534 is an apocalyptic number.

1381534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1381534 is a deficient number, since it is larger than the sum of its proper divisors (1202402).

1381534 is a wasteful number, since it uses less digits than its factorization.

1381534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8991.

The product of its digits is 1440, while the sum is 25.

The square root of 1381534 is about 1175.3867448632. The cubic root of 1381534 is about 111.3748654814.

The spelling of 1381534 in words is "one million, three hundred eighty-one thousand, five hundred thirty-four".