1385691674 has 4 divisors (see below), whose sum is σ = 2078537514. Its totient is φ = 692845836.

The previous prime is 1385691667. The next prime is 1385691707. The reversal of 1385691674 is 4761965831.

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

It can be written as a sum of positive squares in only one way, i.e., 1132659025 + 253032649 = 33655^2 + 15907^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346422917 + ... + 346422920.

Almost surely, 2^1385691674 is an apocalyptic number.

1385691674 is a deficient number, since it is larger than the sum of its proper divisors (692845840).

1385691674 is an equidigital number, since it uses as much as digits as its factorization.

1385691674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692845839.

The product of its digits is 1088640, while the sum is 50.

The square root of 1385691674 is about 37224.8797714647. The cubic root of 1385691674 is about 1114.8647972965.

The spelling of 1385691674 in words is "one billion, three hundred eighty-five million, six hundred ninety-one thousand, six hundred seventy-four".