1324378138 has 4 divisors (see below), whose sum is σ = 1986567210. Its totient is φ = 662189068.

The previous prime is 1324378127. The next prime is 1324378141. The reversal of 1324378138 is 8318734231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8318734231 = 23 ⋅361684097.

It can be written as a sum of positive squares in only one way, i.e., 851880969 + 472497169 = 29187^2 + 21737^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1324378138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 331094533 + ... + 331094536.

Almost surely, 2^1324378138 is an apocalyptic number.

1324378138 is a deficient number, since it is larger than the sum of its proper divisors (662189072).

1324378138 is an equidigital number, since it uses as much as digits as its factorization.

1324378138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662189071.

The product of its digits is 96768, while the sum is 40.

The square root of 1324378138 is about 36392.0065124197. The cubic root of 1324378138 is about 1098.1727620014.

The spelling of 1324378138 in words is "one billion, three hundred twenty-four million, three hundred seventy-eight thousand, one hundred thirty-eight".