1385181374 has 8 divisors (see below), whose sum is σ = 2096834520. Its totient is φ = 686236536.

The previous prime is 1385181359. The next prime is 1385181407. The reversal of 1385181374 is 4731815831.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3176804 + ... + 3177239.

It is an arithmetic number, because the mean of its divisors is an integer number (262104315).

Almost surely, 2^1385181374 is an apocalyptic number.

1385181374 is a deficient number, since it is larger than the sum of its proper divisors (711653146).

1385181374 is a wasteful number, since it uses less digits than its factorization.

1385181374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6354154.

The product of its digits is 80640, while the sum is 41.

The square root of 1385181374 is about 37218.0248535572. The cubic root of 1385181374 is about 1114.7279257331.

The spelling of 1385181374 in words is "one billion, three hundred eighty-five million, one hundred eighty-one thousand, three hundred seventy-four".