1138634 has 8 divisors (see below), whose sum is σ = 1951968. Its totient is φ = 487980.

The previous prime is 1138591. The next prime is 1138637. The reversal of 1138634 is 4368311.

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

It is not an unprimeable number, because it can be changed into a prime (1138637) 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, 40652 + ... + 40679.

It is an arithmetic number, because the mean of its divisors is an integer number (243996).

2^1138634 is an apocalyptic number.

1138634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1138634 is a deficient number, since it is larger than the sum of its proper divisors (813334).

1138634 is an equidigital number, since it uses as much as digits as its factorization.

1138634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81340.

The product of its digits is 1728, while the sum is 26.

The square root of 1138634 is about 1067.0679453531. The cubic root of 1138634 is about 104.4226513389.

The spelling of 1138634 in words is "one million, one hundred thirty-eight thousand, six hundred thirty-four".