1386845646 has 16 divisors (see below), whose sum is σ = 2782075008. Its totient is φ = 460884600.

The previous prime is 1386845641. The next prime is 1386845659. The reversal of 1386845646 is 6465486831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386845641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347170 + ... + 351141.

It is an arithmetic number, because the mean of its divisors is an integer number (173879688).

Almost surely, 2^1386845646 is an apocalyptic number.

1386845646 is an abundant number, since it is smaller than the sum of its proper divisors (1395229362).

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

1386845646 is a wasteful number, since it uses less digits than its factorization.

1386845646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698647.

The product of its digits is 3317760, while the sum is 51.

The square root of 1386845646 is about 37240.3765555613. The cubic root of 1386845646 is about 1115.1741893063.

The spelling of 1386845646 in words is "one billion, three hundred eighty-six million, eight hundred forty-five thousand, six hundred forty-six".