1055276389 has 4 divisors (see below), whose sum is σ = 1091665260. Its totient is φ = 1018887520.

The previous prime is 1055276357. The next prime is 1055276407. The reversal of 1055276389 is 9836725501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 884765025 + 170511364 = 29745^2 + 13058^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055276389 - 2⁵ = 1055276357 is a prime.

It is a super-2 number, since 2×1055276389² = 2227216514361758642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1055271389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18194392 + ... + 18194449.

It is an arithmetic number, because the mean of its divisors is an integer number (272916315).

Almost surely, 2^1055276389 is an apocalyptic number.

It is an amenable number.

1055276389 is a deficient number, since it is larger than the sum of its proper divisors (36388871).

1055276389 is an equidigital number, since it uses as much as digits as its factorization.

1055276389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36388870.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 1055276389 is about 32485.0179159563. The cubic root of 1055276389 is about 1018.0960217206.

The spelling of 1055276389 in words is "one billion, fifty-five million, two hundred seventy-six thousand, three hundred eighty-nine".