1385523263 has 8 divisors (see below), whose sum is σ = 1464261120. Its totient is φ = 1307367000.

The previous prime is 1385523259. The next prime is 1385523281. The reversal of 1385523263 is 3623255831.

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

It is a cyclic number.

It is not a de Polignac number, because 1385523263 - 2² = 1385523259 is a prime.

It is a super-3 number, since 3×1385523263³ (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 (1385523463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140495 + ... + 150032.

It is an arithmetic number, because the mean of its divisors is an integer number (183032640).

Almost surely, 2^1385523263 is an apocalyptic number.

1385523263 is a deficient number, since it is larger than the sum of its proper divisors (78737857).

1385523263 is a wasteful number, since it uses less digits than its factorization.

1385523263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290797.

The product of its digits is 129600, while the sum is 38.

The square root of 1385523263 is about 37222.6176269214. The cubic root of 1385523263 is about 1114.8196301774.

The spelling of 1385523263 in words is "one billion, three hundred eighty-five million, five hundred twenty-three thousand, two hundred sixty-three".