1166555204 has 6 divisors (see below), whose sum is σ = 2041471614. Its totient is φ = 583277600.

The previous prime is 1166555197. The next prime is 1166555207. The reversal of 1166555204 is 4025556611.

It can be written as a sum of positive squares in only one way, i.e., 936972100 + 229583104 = 30610^2 + 15152^2 .

It is not an unprimeable number, because it can be changed into a prime (1166555207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145819397 + ... + 145819404.

It is an arithmetic number, because the mean of its divisors is an integer number (340245269).

Almost surely, 2^1166555204 is an apocalyptic number.

It is an amenable number.

1166555204 is a deficient number, since it is larger than the sum of its proper divisors (874916410).

1166555204 is a wasteful number, since it uses less digits than its factorization.

1166555204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291638805 (or 291638803 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The square root of 1166555204 is about 34154.8708678572. The cubic root of 1166555204 is about 1052.6930729091.

The spelling of 1166555204 in words is "one billion, one hundred sixty-six million, five hundred fifty-five thousand, two hundred four".