1385780201 has 16 divisors (see below), whose sum is σ = 1531716480. Its totient is φ = 1245901440.

The previous prime is 1385780183. The next prime is 1385780267. The reversal of 1385780201 is 1020875831.

It is a cyclic number.

It is not a de Polignac number, because 1385780201 - 2¹⁴ = 1385763817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1385780281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67565 + ... + 85653.

It is an arithmetic number, because the mean of its divisors is an integer number (95732280).

Almost surely, 2^1385780201 is an apocalyptic number.

It is an amenable number.

1385780201 is a deficient number, since it is larger than the sum of its proper divisors (145936279).

1385780201 is a wasteful number, since it uses less digits than its factorization.

1385780201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18256.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1385780201 is about 37226.0688362336. The cubic root of 1385780201 is about 1114.8885383965. Note that the first 3 decimals are identical.

The spelling of 1385780201 in words is "one billion, three hundred eighty-five million, seven hundred eighty thousand, two hundred one".