1381963 has 8 divisors (see below), whose sum is σ = 1529136. Its totient is φ = 1238400.

The previous prime is 1381921. The next prime is 1381967. The reversal of 1381963 is 3691831.

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 1381963 - 2⁹ = 1381451 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1381967) 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, 58 + ... + 1663.

It is an arithmetic number, because the mean of its divisors is an integer number (191142).

2^1381963 is an apocalyptic number.

1381963 is a deficient number, since it is larger than the sum of its proper divisors (147173).

1381963 is a wasteful number, since it uses less digits than its factorization.

1381963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1805.

The product of its digits is 3888, while the sum is 31.

The square root of 1381963 is about 1175.5692238231. The cubic root of 1381963 is about 111.3863924923.

The spelling of 1381963 in words is "one million, three hundred eighty-one thousand, nine hundred sixty-three".