1386091512 has 96 divisors (see below), whose sum is σ = 4065843600. Its totient is φ = 424055808.

The previous prime is 1386091507. The next prime is 1386091513. The reversal of 1386091512 is 2151906831.

1386091512 is a `hidden beast` number, since 1 + 38 + 609 + 1 + 5 + 12 = 666.

1386091512 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1386091512² = 3842499359276892288, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386091513) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163408 + ... + 171680.

Almost surely, 2^1386091512 is an apocalyptic number.

1386091512 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 1386091512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032921800).

1386091512 is an abundant number, since it is smaller than the sum of its proper divisors (2679752088).

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

1386091512 is a wasteful number, since it uses less digits than its factorization.

1386091512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8477 (or 8470 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1386091512 is about 37230.2499588708. The cubic root of 1386091512 is about 1114.9720175031.

The spelling of 1386091512 in words is "one billion, three hundred eighty-six million, ninety-one thousand, five hundred twelve".