1386907933 has 2 divisors, whose sum is σ = 1386907934. Its totient is φ = 1386907932.

The previous prime is 1386907909. The next prime is 1386908011. The reversal of 1386907933 is 3397096831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1282929124 + 103978809 = 35818^2 + 10197^2 .

It is an emirp because it is prime and its reverse (3397096831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1386907933 - 2⁵ = 1386907901 is a prime.

It is a super-2 number, since 2×1386907933² = 3847027229236664978, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386907633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693453966 + 693453967.

It is an arithmetic number, because the mean of its divisors is an integer number (693453967).

Almost surely, 2^1386907933 is an apocalyptic number.

It is an amenable number.

1386907933 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386907933 is an equidigital number, since it uses as much as digits as its factorization.

1386907933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 49.

The square root of 1386907933 is about 37241.2128293373. The cubic root of 1386907933 is about 1115.1908842224.

The spelling of 1386907933 in words is "one billion, three hundred eighty-six million, nine hundred seven thousand, nine hundred thirty-three".