1386445774 has 16 divisors (see below), whose sum is σ = 2398572000. Its totient is φ = 588739104.

The previous prime is 1386445747. The next prime is 1386445783. The reversal of 1386445774 is 4775446831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452749 + ... + 455800.

It is an arithmetic number, because the mean of its divisors is an integer number (149910750).

Almost surely, 2^1386445774 is an apocalyptic number.

1386445774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1386445774 is a deficient number, since it is larger than the sum of its proper divisors (1012126226).

1386445774 is a wasteful number, since it uses less digits than its factorization.

1386445774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908667.

The product of its digits is 2257920, while the sum is 49.

The square root of 1386445774 is about 37235.0073720954. The cubic root of 1386445774 is about 1115.0669988630.

The spelling of 1386445774 in words is "one billion, three hundred eighty-six million, four hundred forty-five thousand, seven hundred seventy-four".