1054161109 has 4 divisors (see below), whose sum is σ = 1116170604. Its totient is φ = 992151616.

The previous prime is 1054161091. The next prime is 1054161137. The reversal of 1054161109 is 9011614501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9011614501 = 139 ⋅64831759.

It can be written as a sum of positive squares in 2 ways, for example, as 757460484 + 296700625 = 27522^2 + 17225^2 .

It is a cyclic number.

It is not a de Polignac number, because 1054161109 - 2⁵ = 1054161077 is a prime.

It is a super-2 number, since 2×1054161109² = 2222511287456219762, 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 (1054161509) 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, 31004722 + ... + 31004755.

It is an arithmetic number, because the mean of its divisors is an integer number (279042651).

Almost surely, 2^1054161109 is an apocalyptic number.

It is an amenable number.

1054161109 is a deficient number, since it is larger than the sum of its proper divisors (62009495).

1054161109 is an equidigital number, since it uses as much as digits as its factorization.

1054161109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62009494.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1054161109 is about 32467.8473108397. The cubic root of 1054161109 is about 1017.7372334491.

The spelling of 1054161109 in words is "one billion, fifty-four million, one hundred sixty-one thousand, one hundred nine".