1386853973 has 2 divisors, whose sum is σ = 1386853974. Its totient is φ = 1386853972.

The previous prime is 1386853933. The next prime is 1386853991. The reversal of 1386853973 is 3793586831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1182878449 + 203975524 = 34393^2 + 14282^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386853973 - 2¹⁰ = 1386852949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386853933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693426986 + 693426987.

It is an arithmetic number, because the mean of its divisors is an integer number (693426987).

Almost surely, 2^1386853973 is an apocalyptic number.

It is an amenable number.

1386853973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386853973 is an equidigital number, since it uses as much as digits as its factorization.

1386853973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The square root of 1386853973 is about 37240.4883560890. The cubic root of 1386853973 is about 1115.1764212386.

The spelling of 1386853973 in words is "one billion, three hundred eighty-six million, eight hundred fifty-three thousand, nine hundred seventy-three".