1155655478 has 16 divisors (see below), whose sum is σ = 1854380304. Its totient is φ = 538229760.

The previous prime is 1155655471. The next prime is 1155655483. The reversal of 1155655478 is 8745565511.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155655471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171908 + ... + 178503.

It is an arithmetic number, because the mean of its divisors is an integer number (115898769).

Almost surely, 2^1155655478 is an apocalyptic number.

1155655478 is a deficient number, since it is larger than the sum of its proper divisors (698724826).

1155655478 is a wasteful number, since it uses less digits than its factorization.

1155655478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350527.

The product of its digits is 840000, while the sum is 47.

The square root of 1155655478 is about 33994.9331224522. The cubic root of 1155655478 is about 1049.4041904750.

The spelling of 1155655478 in words is "one billion, one hundred fifty-five million, six hundred fifty-five thousand, four hundred seventy-eight".