1386831850 has 24 divisors (see below), whose sum is σ = 2715272640. Its totient is φ = 525535920.

The previous prime is 1386831791. The next prime is 1386831877. The reversal of 1386831850 is 581386831.

It is a junction number, because it is equal to n+sod(n) for n = 1386831797 and 1386831806.

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, 728962 + ... + 730861.

It is an arithmetic number, because the mean of its divisors is an integer number (113136360).

Almost surely, 2^1386831850 is an apocalyptic number.

1386831850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386831850 is a deficient number, since it is larger than the sum of its proper divisors (1328440790).

1386831850 is a wasteful number, since it uses less digits than its factorization.

1386831850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459854 (or 1459849 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1386831850 is about 37240.1913260391. The cubic root of 1386831850 is about 1115.1704914677.

The spelling of 1386831850 in words is "one billion, three hundred eighty-six million, eight hundred thirty-one thousand, eight hundred fifty".