1161331054 has 16 divisors (see below), whose sum is σ = 1906752960. Its totient is φ = 527211360.

The previous prime is 1161331051. The next prime is 1161331069. The reversal of 1161331054 is 4501331611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161331051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364534 + ... + 367705.

It is an arithmetic number, because the mean of its divisors is an integer number (119172060).

Almost surely, 2^1161331054 is an apocalyptic number.

1161331054 is a deficient number, since it is larger than the sum of its proper divisors (745421906).

1161331054 is a wasteful number, since it uses less digits than its factorization.

1161331054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732315.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1161331054 is about 34078.3076751179. The cubic root of 1161331054 is about 1051.1193064640.

Adding to 1161331054 its reverse (4501331611), we get a palindrome (5662662665).

The spelling of 1161331054 in words is "one billion, one hundred sixty-one million, three hundred thirty-one thousand, fifty-four".