1385207471 has 4 divisors (see below), whose sum is σ = 1385338944. Its totient is φ = 1385076000.

The previous prime is 1385207437. The next prime is 1385207531. The reversal of 1385207471 is 1747025831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1747025831 = 1801 ⋅970031.

It is a cyclic number.

It is not a de Polignac number, because 1385207471 - 2¹⁸ = 1384945327 is a prime.

It is a super-3 number, since 3×1385207471³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385207401) 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, 48410 + ... + 71511.

It is an arithmetic number, because the mean of its divisors is an integer number (346334736).

Almost surely, 2^1385207471 is an apocalyptic number.

1385207471 is a deficient number, since it is larger than the sum of its proper divisors (131473).

1385207471 is a wasteful number, since it uses less digits than its factorization.

1385207471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131472.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 1385207471 is about 37218.3754481573. The cubic root of 1385207471 is about 1114.7349262296.

The spelling of 1385207471 in words is "one billion, three hundred eighty-five million, two hundred seven thousand, four hundred seventy-one".