1386389494 has 8 divisors (see below), whose sum is σ = 2376667728. Its totient is φ = 594166920.

The previous prime is 1386389483. The next prime is 1386389507. The reversal of 1386389494 is 4949836831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49513897 + ... + 49513924.

It is an arithmetic number, because the mean of its divisors is an integer number (297083466).

Almost surely, 2^1386389494 is an apocalyptic number.

1386389494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1386389494 is a deficient number, since it is larger than the sum of its proper divisors (990278234).

1386389494 is an equidigital number, since it uses as much as digits as its factorization.

1386389494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99027830.

The product of its digits is 4478976, while the sum is 55.

The square root of 1386389494 is about 37234.2516240088. The cubic root of 1386389494 is about 1115.0519106855.

The spelling of 1386389494 in words is "one billion, three hundred eighty-six million, three hundred eighty-nine thousand, four hundred ninety-four".