1386829818 has 24 divisors (see below), whose sum is σ = 3277961856. Its totient is φ = 420251400.

The previous prime is 1386829813. The next prime is 1386829823. The reversal of 1386829818 is 8189286831.

It is an interprime number because it is at equal distance from previous prime (1386829813) and next prime (1386829823).

It is not an unprimeable number, because it can be changed into a prime (1386829811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3501898 + ... + 3502293.

It is an arithmetic number, because the mean of its divisors is an integer number (136581744).

Almost surely, 2^1386829818 is an apocalyptic number.

1386829818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1386829818 is an abundant number, since it is smaller than the sum of its proper divisors (1891132038).

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

1386829818 is a wasteful number, since it uses less digits than its factorization.

1386829818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7004210 (or 7004207 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 1386829818 is about 37240.1640436774. The cubic root of 1386829818 is about 1115.1699468144.

The spelling of 1386829818 in words is "one billion, three hundred eighty-six million, eight hundred twenty-nine thousand, eight hundred eighteen".