1381532 has 12 divisors (see below), whose sum is σ = 2425920. Its totient is φ = 688416.

The previous prime is 1381529. The next prime is 1381537. The reversal of 1381532 is 2351831.

It is a junction number, because it is equal to n+sod(n) for n = 1381498 and 1381507.

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 3 ways as a sum of consecutive naturals, for example, 1973 + ... + 2579.

It is an arithmetic number, because the mean of its divisors is an integer number (202160).

2^1381532 is an apocalyptic number.

It is an amenable number.

1381532 is a deficient number, since it is larger than the sum of its proper divisors (1044388).

1381532 is a wasteful number, since it uses less digits than its factorization.

1381532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180 (or 1178 counting only the distinct ones).

The product of its digits is 720, while the sum is 23.

The square root of 1381532 is about 1175.3858940790. The cubic root of 1381532 is about 111.3748117368.

Subtracting 1381532 from its reverse (2351831), we obtain a cube (970299 = 99³).

The spelling of 1381532 in words is "one million, three hundred eighty-one thousand, five hundred thirty-two".