1385443476 has 36 divisors (see below), whose sum is σ = 3519888372. Its totient is φ = 459467904.

The previous prime is 1385443471. The next prime is 1385443483. The reversal of 1385443476 is 6743445831.

1385443476 is a `hidden beast` number, since 1 + 3 + 8 + 544 + 34 + 76 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 614048400 + 771395076 = 24780^2 + 27774^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1385443471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90585 + ... + 104768.

It is an arithmetic number, because the mean of its divisors is an integer number (97774677).

Almost surely, 2^1385443476 is an apocalyptic number.

It is an amenable number.

1385443476 is an abundant number, since it is smaller than the sum of its proper divisors (2134444896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1385443476 is a wasteful number, since it uses less digits than its factorization.

1385443476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195560 (or 195555 counting only the distinct ones).

The product of its digits is 967680, while the sum is 45.

The square root of 1385443476 is about 37221.5458572048. The cubic root of 1385443476 is about 1114.7982303632.

The spelling of 1385443476 in words is "one billion, three hundred eighty-five million, four hundred forty-three thousand, four hundred seventy-six".