1386491652 has 216 divisors, whose sum is σ = 4440735936. Its totient is φ = 361501056.

The previous prime is 1386491651. The next prime is 1386491657. The reversal of 1386491652 is 2561946831.

It is a junction number, because it is equal to n+sod(n) for n = 1386491598 and 1386491607.

It is not an unprimeable number, because it can be changed into a prime (1386491651) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2361703 + ... + 2362289.

Almost surely, 2^1386491652 is an apocalyptic number.

1386491652 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 1386491652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2220367968).

1386491652 is an abundant number, since it is smaller than the sum of its proper divisors (3054244284).

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

1386491652 is a wasteful number, since it uses less digits than its factorization.

1386491652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 715 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 1386491652 is about 37235.6234270356. The cubic root of 1386491652 is about 1115.0792980529.

The spelling of 1386491652 in words is "one billion, three hundred eighty-six million, four hundred ninety-one thousand, six hundred fifty-two".