1385937650 has 24 divisors (see below), whose sum is σ = 2579720304. Its totient is φ = 553971600.

The previous prime is 1385937643. The next prime is 1385937673. The reversal of 1385937650 is 567395831.

It is a junction number, because it is equal to n+sod(n) for n = 1385937595 and 1385937604.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64805 + ... + 83495.

It is an arithmetic number, because the mean of its divisors is an integer number (107488346).

Almost surely, 2^1385937650 is an apocalyptic number.

1385937650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1385937650 is a deficient number, since it is larger than the sum of its proper divisors (1193782654).

1385937650 is a wasteful number, since it uses less digits than its factorization.

1385937650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20186 (or 20181 counting only the distinct ones).

The product of its (nonzero) digits is 680400, while the sum is 47.

The square root of 1385937650 is about 37228.1835441914. The cubic root of 1385937650 is about 1114.9307604454.

The spelling of 1385937650 in words is "one billion, three hundred eighty-five million, nine hundred thirty-seven thousand, six hundred fifty".