1386420555 has 16 divisors (see below), whose sum is σ = 2388909600. Its totient is φ = 682545408.

The previous prime is 1386420521. The next prime is 1386420559. The reversal of 1386420555 is 5550246831.

It is not a de Polignac number, because 1386420555 - 2²⁶ = 1319311691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1386420559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3554730 + ... + 3555119.

It is an arithmetic number, because the mean of its divisors is an integer number (149306850).

Almost surely, 2^1386420555 is an apocalyptic number.

1386420555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1386420555 is a deficient number, since it is larger than the sum of its proper divisors (1002489045).

1386420555 is a wasteful number, since it uses less digits than its factorization.

1386420555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7109870.

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 1386420555 is about 37234.6687241877. The cubic root of 1386420555 is about 1115.0602379194.

The spelling of 1386420555 in words is "one billion, three hundred eighty-six million, four hundred twenty thousand, five hundred fifty-five".