1385282788 has 12 divisors (see below), whose sum is σ = 2507839740. Its totient is φ = 668757152.

The previous prime is 1385282737. The next prime is 1385282813. The reversal of 1385282788 is 8872825831.

It can be written as a sum of positive squares in 2 ways, for example, as 267584164 + 1117698624 = 16358^2 + 33432^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5970931 + ... + 5971162.

It is an arithmetic number, because the mean of its divisors is an integer number (208986645).

Almost surely, 2^1385282788 is an apocalyptic number.

It is an amenable number.

1385282788 is a deficient number, since it is larger than the sum of its proper divisors (1122556952).

1385282788 is a wasteful number, since it uses less digits than its factorization.

1385282788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942126 (or 11942124 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 52.

The square root of 1385282788 is about 37219.3872598677. The cubic root of 1385282788 is about 1114.7551294532.

The spelling of 1385282788 in words is "one billion, three hundred eighty-five million, two hundred eighty-two thousand, seven hundred eighty-eight".