1385389960 has 16 divisors (see below), whose sum is σ = 3117127500. Its totient is φ = 554155968.

The previous prime is 1385389937. The next prime is 1385389961. The reversal of 1385389960 is 699835831.

It can be written as a sum of positive squares in 2 ways, for example, as 1286943876 + 98446084 = 35874^2 + 9922^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1385389898 and 1385389907.

It is not an unprimeable number, because it can be changed into a prime (1385389961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17317335 + ... + 17317414.

Almost surely, 2^1385389960 is an apocalyptic number.

1385389960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1385389960 is an abundant number, since it is smaller than the sum of its proper divisors (1731737540).

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

1385389960 is a wasteful number, since it uses less digits than its factorization.

1385389960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34634760 (or 34634756 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 52.

The square root of 1385389960 is about 37220.8269655579. The cubic root of 1385389960 is about 1114.7838762806.

The spelling of 1385389960 in words is "one billion, three hundred eighty-five million, three hundred eighty-nine thousand, nine hundred sixty".