1200381053 has 4 divisors (see below), whose sum is σ = 1203316380. Its totient is φ = 1197445728.

The previous prime is 1200381043. The next prime is 1200381059. The reversal of 1200381053 is 3501830021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3501830021 = 193 ⋅18144197.

It can be written as a sum of positive squares in 2 ways, for example, as 1153417444 + 46963609 = 33962^2 + 6853^2 .

It is a cyclic number.

It is not a de Polignac number, because 1200381053 - 2⁴ = 1200381037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200381059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1467050 + ... + 1467867.

It is an arithmetic number, because the mean of its divisors is an integer number (300829095).

Almost surely, 2^1200381053 is an apocalyptic number.

It is an amenable number.

1200381053 is a deficient number, since it is larger than the sum of its proper divisors (2935327).

1200381053 is an equidigital number, since it uses as much as digits as its factorization.

1200381053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935326.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1200381053 is about 34646.5157411247. The cubic root of 1200381053 is about 1062.7710376222.

The spelling of 1200381053 in words is "one billion, two hundred million, three hundred eighty-one thousand, fifty-three".