1138963 has 4 divisors (see below), whose sum is σ = 1301680. Its totient is φ = 976248.

The previous prime is 1138961. The next prime is 1138967. The reversal of 1138963 is 3698311.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1138963 - 2¹ = 1138961 is a prime.

It is a Duffinian number.

1138963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1138961) 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, 81348 + ... + 81361.

It is an arithmetic number, because the mean of its divisors is an integer number (325420).

2^1138963 is an apocalyptic number.

1138963 is a deficient number, since it is larger than the sum of its proper divisors (162717).

1138963 is an equidigital number, since it uses as much as digits as its factorization.

1138963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162716.

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

The square root of 1138963 is about 1067.2220949737. Note that the first 3 decimals coincide. The cubic root of 1138963 is about 104.4327077585.

The spelling of 1138963 in words is "one million, one hundred thirty-eight thousand, nine hundred sixty-three".