1386574464 has 128 divisors (see below), whose sum is σ = 4058196480. Its totient is φ = 415964160.

The previous prime is 1386574459. The next prime is 1386574471. The reversal of 1386574464 is 4644756831.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433479 + ... + 436665.

It is an arithmetic number, because the mean of its divisors is an integer number (31704660).

Almost surely, 2^1386574464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1386574464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2029098240).

1386574464 is an abundant number, since it is smaller than the sum of its proper divisors (2671622016).

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

1386574464 is a wasteful number, since it uses less digits than its factorization.

1386574464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3318 (or 3306 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 48.

The square root of 1386574464 is about 37236.7354100759. The cubic root of 1386574464 is about 1115.1014979963.

The spelling of 1386574464 in words is "one billion, three hundred eighty-six million, five hundred seventy-four thousand, four hundred sixty-four".