1386413386 has 4 divisors (see below), whose sum is σ = 2079620082. Its totient is φ = 693206692.

The previous prime is 1386413381. The next prime is 1386413437. The reversal of 1386413386 is 6833146831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6833146831 = 7 ⋅976163833.

It can be written as a sum of positive squares in only one way, i.e., 1345055625 + 41357761 = 36675^2 + 6431^2 .

It is not an unprimeable number, because it can be changed into a prime (1386413381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 346603345 + ... + 346603348.

Almost surely, 2^1386413386 is an apocalyptic number.

1386413386 is a deficient number, since it is larger than the sum of its proper divisors (693206696).

1386413386 is an equidigital number, since it uses as much as digits as its factorization.

1386413386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693206695.

The product of its digits is 248832, while the sum is 43.

The square root of 1386413386 is about 37234.5724562536. The cubic root of 1386413386 is about 1115.0583159724.

The spelling of 1386413386 in words is "one billion, three hundred eighty-six million, four hundred thirteen thousand, three hundred eighty-six".