1386973305 has 96 divisors (see below), whose sum is σ = 2752963200. Its totient is φ = 641488896.

The previous prime is 1386973303. The next prime is 1386973307. The reversal of 1386973305 is 5033796831.

It is an interprime number because it is at equal distance from previous prime (1386973303) and next prime (1386973307).

It is not a de Polignac number, because 1386973305 - 2¹ = 1386973303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1386973303) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 536506 + ... + 539084.

It is an arithmetic number, because the mean of its divisors is an integer number (28676700).

Almost surely, 2^1386973305 is an apocalyptic number.

1386973305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1386973305 is a deficient number, since it is larger than the sum of its proper divisors (1365989895).

1386973305 is a wasteful number, since it uses less digits than its factorization.

1386973305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2663 (or 2660 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 45.

The square root of 1386973305 is about 37242.0905025483. The cubic root of 1386973305 is about 1115.2084054799.

The spelling of 1386973305 in words is "one billion, three hundred eighty-six million, nine hundred seventy-three thousand, three hundred five".