1386841140 has 72 divisors (see below), whose sum is σ = 4209784488. Its totient is φ = 369557760.

The previous prime is 1386841139. The next prime is 1386841151. The reversal of 1386841140 is 411486831.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 126023076 + 1260818064 = 11226^2 + 35508^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1386841095 and 1386841104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 483310 + ... + 486170.

It is an arithmetic number, because the mean of its divisors is an integer number (58469229).

Almost surely, 2^1386841140 is an apocalyptic number.

1386841140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1386841140 is an abundant number, since it is smaller than the sum of its proper divisors (2822943348).

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

1386841140 is a wasteful number, since it uses less digits than its factorization.

1386841140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5569 (or 5564 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1386841140 is about 37240.3160566610. The cubic root of 1386841140 is about 1115.1729815342.

The spelling of 1386841140 in words is "one billion, three hundred eighty-six million, eight hundred forty-one thousand, one hundred forty".