1045161091 has 8 divisors (see below), whose sum is σ = 1126429920. Its totient is φ = 964016832.

The previous prime is 1045161079. The next prime is 1045161121. The reversal of 1045161091 is 1901615401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1045161091 - 2⁵ = 1045161059 is a prime.

It is a super-2 number, since 2×1045161091² = 2184723412280620562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1045161031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13330 + ... + 47623.

It is an arithmetic number, because the mean of its divisors is an integer number (140803740).

Almost surely, 2^1045161091 is an apocalyptic number.

1045161091 is a deficient number, since it is larger than the sum of its proper divisors (81268829).

1045161091 is a wasteful number, since it uses less digits than its factorization.

1045161091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62285.

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

The square root of 1045161091 is about 32328.9512820939. The cubic root of 1045161091 is about 1014.8326031299.

Adding to 1045161091 its reverse (1901615401), we get a palindrome (2946776492).

The spelling of 1045161091 in words is "one billion, forty-five million, one hundred sixty-one thousand, ninety-one".