1088136461 has 4 divisors (see below), whose sum is σ = 1088204124. Its totient is φ = 1088068800.

The previous prime is 1088136451. The next prime is 1088136499. The reversal of 1088136461 is 1646318801.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1646318801 = 39199 ⋅41999.

It can be written as a sum of positive squares in 2 ways, for example, as 641659561 + 446476900 = 25331^2 + 21130^2 .

It is a cyclic number.

It is not a de Polignac number, because 1088136461 - 2¹⁰ = 1088135437 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 (1088136431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5651 + ... + 46991.

It is an arithmetic number, because the mean of its divisors is an integer number (272051031).

Almost surely, 2^1088136461 is an apocalyptic number.

It is an amenable number.

1088136461 is a deficient number, since it is larger than the sum of its proper divisors (67663).

1088136461 is an equidigital number, since it uses as much as digits as its factorization.

1088136461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67662.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1088136461 is about 32986.9134809548. The cubic root of 1088136461 is about 1028.5556344237. Note that the first 3 decimals are identical.

The spelling of 1088136461 in words is "one billion, eighty-eight million, one hundred thirty-six thousand, four hundred sixty-one".