1385107776 has 504 divisors, whose sum is σ = 4872801024. Its totient is φ = 388177920.

The previous prime is 1385107751. The next prime is 1385107811. The reversal of 1385107776 is 6777015831.

It is a super-2 number, since 2×1385107776² = 3837047102271332352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 71 ways as a sum of consecutive naturals, for example, 44680881 + ... + 44680911.

It is an arithmetic number, because the mean of its divisors is an integer number (9668256).

Almost surely, 2^1385107776 is an apocalyptic number.

1385107776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1385107776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436400512).

1385107776 is an abundant number, since it is smaller than the sum of its proper divisors (3487693248).

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

1385107776 is a wasteful number, since it uses less digits than its factorization.

1385107776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 1385107776 is about 37217.0360990770. The cubic root of 1385107776 is about 1114.7081826630.

The spelling of 1385107776 in words is "one billion, three hundred eighty-five million, one hundred seven thousand, seven hundred seventy-six".