1385613723 has 8 divisors (see below), whose sum is σ = 1989599248. Its totient is φ = 852685344.

The previous prime is 1385613709. The next prime is 1385613731. The reversal of 1385613723 is 3273165831.

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

It is not a de Polignac number, because 1385613723 - 2²¹ = 1383516571 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: 35528557 = 1385613723 / (1 + 3 + 8 + 5 + 6 + 1 + 3 + 7 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (1385613743) 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, 17764240 + ... + 17764317.

It is an arithmetic number, because the mean of its divisors is an integer number (248699906).

Almost surely, 2^1385613723 is an apocalyptic number.

1385613723 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1385613723 is a deficient number, since it is larger than the sum of its proper divisors (603985525).

1385613723 is a wasteful number, since it uses less digits than its factorization.

1385613723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35528573.

The product of its digits is 90720, while the sum is 39.

The square root of 1385613723 is about 37223.8327285088. The cubic root of 1385613723 is about 1114.8438916224.

The spelling of 1385613723 in words is "one billion, three hundred eighty-five million, six hundred thirteen thousand, seven hundred twenty-three".