1027638453 has 4 divisors (see below), whose sum is σ = 1370184608. Its totient is φ = 685092300.

The previous prime is 1027638449. The next prime is 1027638487. The reversal of 1027638453 is 3548367201.

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 not a de Polignac number, because 1027638453 - 2² = 1027638449 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 (1027638653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171273073 + ... + 171273078.

It is an arithmetic number, because the mean of its divisors is an integer number (342546152).

Almost surely, 2^1027638453 is an apocalyptic number.

It is an amenable number.

1027638453 is a deficient number, since it is larger than the sum of its proper divisors (342546155).

1027638453 is an equidigital number, since it uses as much as digits as its factorization.

1027638453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342546154.

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 1027638453 is about 32056.8004173841. The cubic root of 1027638453 is about 1009.1292213660.

The spelling of 1027638453 in words is "one billion, twenty-seven million, six hundred thirty-eight thousand, four hundred fifty-three".