1385344623 has 8 divisors (see below), whose sum is σ = 1989212848. Its totient is φ = 852519744.

The previous prime is 1385344621. The next prime is 1385344633. The reversal of 1385344623 is 3264435831.

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

It is not a de Polignac number, because 1385344623 - 2¹ = 1385344621 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 35521657 = 1385344623 / (1 + 3 + 8 + 5 + 3 + 4 + 4 + 6 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385344621) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 17760790 + ... + 17760867.

It is an arithmetic number, because the mean of its divisors is an integer number (248651606).

Almost surely, 2^1385344623 is an apocalyptic number.

1385344623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1385344623 is a deficient number, since it is larger than the sum of its proper divisors (603868225).

1385344623 is a wasteful number, since it uses less digits than its factorization.

1385344623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35521673.

The product of its digits is 207360, while the sum is 39.

The square root of 1385344623 is about 37220.2179332685. The cubic root of 1385344623 is about 1114.7717156834.

The spelling of 1385344623 in words is "one billion, three hundred eighty-five million, three hundred forty-four thousand, six hundred twenty-three".