1004153661 has 24 divisors (see below), whose sum is σ = 1658506304. Its totient is φ = 573505920.

The previous prime is 1004153651. The next prime is 1004153699. The reversal of 1004153661 is 1663514001.

It is not a de Polignac number, because 1004153661 - 2⁷ = 1004153533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004153611) 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 23 ways as a sum of consecutive naturals, for example, 194070 + ... + 199176.

Almost surely, 2^1004153661 is an apocalyptic number.

It is an amenable number.

1004153661 is a deficient number, since it is larger than the sum of its proper divisors (654352643).

1004153661 is a wasteful number, since it uses less digits than its factorization.

1004153661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8241 (or 8238 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1004153661 is about 31688.3836918199. The cubic root of 1004153661 is about 1001.3826410892.

Adding to 1004153661 its reverse (1663514001), we get a palindrome (2667667662).

The spelling of 1004153661 in words is "one billion, four million, one hundred fifty-three thousand, six hundred sixty-one".