1166155054 has 4 divisors (see below), whose sum is σ = 1749232584. Its totient is φ = 583077526.

The previous prime is 1166155051. The next prime is 1166155061. The reversal of 1166155054 is 4505516611.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166155051) 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 as a sum of consecutive naturals, namely, 291538762 + ... + 291538765.

It is an arithmetic number, because the mean of its divisors is an integer number (437308146).

Almost surely, 2^1166155054 is an apocalyptic number.

1166155054 is a deficient number, since it is larger than the sum of its proper divisors (583077530).

1166155054 is an equidigital number, since it uses as much as digits as its factorization.

1166155054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583077529.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 1166155054 is about 34149.0124893825. The cubic root of 1166155054 is about 1052.5726947493.

The spelling of 1166155054 in words is "one billion, one hundred sixty-six million, one hundred fifty-five thousand, fifty-four".