1386927198 has 20 divisors (see below), whose sum is σ = 3107744640. Its totient is φ = 462309012.

The previous prime is 1386927193. The next prime is 1386927221. The reversal of 1386927198 is 8917296831.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386927193) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4280478 + ... + 4280801.

It is an arithmetic number, because the mean of its divisors is an integer number (155387232).

Almost surely, 2^1386927198 is an apocalyptic number.

1386927198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1386927198 is an abundant number, since it is smaller than the sum of its proper divisors (1720817442).

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

1386927198 is an equidigital number, since it uses as much as digits as its factorization.

1386927198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8561293 (or 8561284 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 1386927198 is about 37241.4714800584. The cubic root of 1386927198 is about 1115.1960477597.

The spelling of 1386927198 in words is "one billion, three hundred eighty-six million, nine hundred twenty-seven thousand, one hundred ninety-eight".