1386041988 has 48 divisors (see below), whose sum is σ = 3272290560. Its totient is φ = 456576000.

The previous prime is 1386041971. The next prime is 1386041999. The reversal of 1386041988 is 8891406831.

It is a super-2 number, since 2×1386041988² = 3842224784997984288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125333 + ... + 1126563.

It is an arithmetic number, because the mean of its divisors is an integer number (68172720).

Almost surely, 2^1386041988 is an apocalyptic number.

It is an amenable number.

1386041988 is an abundant number, since it is smaller than the sum of its proper divisors (1886248572).

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

1386041988 is a wasteful number, since it uses less digits than its factorization.

1386041988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 2266 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 1386041988 is about 37229.5848486120. The cubic root of 1386041988 is about 1114.9587383097.

The spelling of 1386041988 in words is "one billion, three hundred eighty-six million, forty-one thousand, nine hundred eighty-eight".