1386749952 has 168 divisors, whose sum is σ = 4579900416. Its totient is φ = 396066816.

The previous prime is 1386749921. The next prime is 1386749977. The reversal of 1386749952 is 2599476831.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514753 + ... + 517439.

It is an arithmetic number, because the mean of its divisors is an integer number (27261312).

Almost surely, 2^1386749952 is an apocalyptic number.

1386749952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386749952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2289950208).

1386749952 is an abundant number, since it is smaller than the sum of its proper divisors (3193150464).

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

1386749952 is an equidigital number, since it uses as much as digits as its factorization.

1386749952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726 (or 2699 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 1386749952 is about 37239.0917182468. The cubic root of 1386749952 is about 1115.1485392676.

The spelling of 1386749952 in words is "one billion, three hundred eighty-six million, seven hundred forty-nine thousand, nine hundred fifty-two".