1385168273 has 2 divisors, whose sum is σ = 1385168274. Its totient is φ = 1385168272.

The previous prime is 1385168227. The next prime is 1385168287. The reversal of 1385168273 is 3728615831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1232571664 + 152596609 = 35108^2 + 12353^2 .

It is a cyclic number.

It is not a de Polignac number, because 1385168273 - 2¹² = 1385164177 is a prime.

It is a super-2 number, since 2×1385168273² = 3837382289051605058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1385168173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692584136 + 692584137.

It is an arithmetic number, because the mean of its divisors is an integer number (692584137).

Almost surely, 2^1385168273 is an apocalyptic number.

It is an amenable number.

1385168273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385168273 is an equidigital number, since it uses as much as digits as its factorization.

1385168273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 44.

The square root of 1385168273 is about 37217.8488497119. The cubic root of 1385168273 is about 1114.7244113686.

The spelling of 1385168273 in words is "one billion, three hundred eighty-five million, one hundred sixty-eight thousand, two hundred seventy-three".