1385940953 has 2 divisors, whose sum is σ = 1385940954. Its totient is φ = 1385940952.

The previous prime is 1385940863. The next prime is 1385940971. The reversal of 1385940953 is 3590495831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1285079104 + 100861849 = 35848^2 + 10043^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385940953 - 2¹² = 1385936857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1385940898 and 1385940907.

It is not a weakly prime, because it can be changed into another prime (1385942953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692970476 + 692970477.

It is an arithmetic number, because the mean of its divisors is an integer number (692970477).

Almost surely, 2^1385940953 is an apocalyptic number.

It is an amenable number.

1385940953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385940953 is an equidigital number, since it uses as much as digits as its factorization.

1385940953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 583200, while the sum is 47.

The square root of 1385940953 is about 37228.2279057169. The cubic root of 1385940953 is about 1114.9316461546.

The spelling of 1385940953 in words is "one billion, three hundred eighty-five million, nine hundred forty thousand, nine hundred fifty-three".