1154055564 has 18 divisors (see below), whose sum is σ = 2917196100. Its totient is φ = 384685176.

The previous prime is 1154055547. The next prime is 1154055601. The reversal of 1154055564 is 4655504511.

1154055564 is a `hidden beast` number, since 1 + 1 + 5 + 40 + 55 + 564 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 32057099 = 1154055564 / (1 + 1 + 5 + 4 + 0 + 5 + 5 + 5 + 6 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16028514 + ... + 16028585.

It is an arithmetic number, because the mean of its divisors is an integer number (162066450).

Almost surely, 2^1154055564 is an apocalyptic number.

It is an amenable number.

1154055564 is an abundant number, since it is smaller than the sum of its proper divisors (1763140536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1154055564 is a wasteful number, since it uses less digits than its factorization.

1154055564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32057109 (or 32057104 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 1154055564 is about 33971.3933184967. The cubic root of 1154055564 is about 1048.9196943373.

The spelling of 1154055564 in words is "one billion, one hundred fifty-four million, fifty-five thousand, five hundred sixty-four".