1385544405 has 32 divisors (see below), whose sum is σ = 2539296000. Its totient is φ = 631959552.

The previous prime is 1385544379. The next prime is 1385544437. The reversal of 1385544405 is 5044455831.

It is not a de Polignac number, because 1385544405 - 2⁶ = 1385544341 is a prime.

It is a congruent number.

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 in 31 ways as a sum of consecutive naturals, for example, 32451 + ... + 61839.

It is an arithmetic number, because the mean of its divisors is an integer number (79353000).

Almost surely, 2^1385544405 is an apocalyptic number.

1385544405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1385544405 is a deficient number, since it is larger than the sum of its proper divisors (1153751595).

1385544405 is a wasteful number, since it uses less digits than its factorization.

1385544405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29853.

The product of its (nonzero) digits is 192000, while the sum is 39.

The square root of 1385544405 is about 37222.9016198361. The cubic root of 1385544405 is about 1114.8253005735.

The spelling of 1385544405 in words is "one billion, three hundred eighty-five million, five hundred forty-four thousand, four hundred five".