1385757700 has 18 divisors (see below), whose sum is σ = 3007094426. Its totient is φ = 554303040.

The previous prime is 1385757683. The next prime is 1385757719. The reversal of 1385757700 is 77575831.

It can be written as a sum of positive squares in 3 ways, for example, as 223084096 + 1162673604 = 14936^2 + 34098^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6928689 + ... + 6928888.

Almost surely, 2^1385757700 is an apocalyptic number.

1385757700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385757700 is an abundant number, since it is smaller than the sum of its proper divisors (1621336726).

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

1385757700 is a wasteful number, since it uses less digits than its factorization.

1385757700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13857591 (or 13857584 counting only the distinct ones).

The product of its (nonzero) digits is 205800, while the sum is 43.

The square root of 1385757700 is about 37225.7666140000. The cubic root of 1385757700 is about 1114.8825041922.

The spelling of 1385757700 in words is "one billion, three hundred eighty-five million, seven hundred fifty-seven thousand, seven hundred".