1538890053 has 4 divisors (see below), whose sum is σ = 2051853408. Its totient is φ = 1025926700.

The previous prime is 1538890039. The next prime is 1538890061. The reversal of 1538890053 is 3500988351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1538890053 - 2²⁶ = 1471781189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1538889987 and 1538890014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1538890753) 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, 256481673 + ... + 256481678.

It is an arithmetic number, because the mean of its divisors is an integer number (512963352).

Almost surely, 2^1538890053 is an apocalyptic number.

It is an amenable number.

1538890053 is a deficient number, since it is larger than the sum of its proper divisors (512963355).

1538890053 is an equidigital number, since it uses as much as digits as its factorization.

1538890053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512963354.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1538890053 is about 39228.6891572992. The cubic root of 1538890053 is about 1154.5228448262.

The spelling of 1538890053 in words is "one billion, five hundred thirty-eight million, eight hundred ninety thousand, fifty-three".