1155477144 has 64 divisors (see below), whose sum is σ = 2977561440. Its totient is φ = 373386240.

The previous prime is 1155477137. The next prime is 1155477149. The reversal of 1155477144 is 4417745511.

1155477144 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155477149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257964 + ... + 262404.

Almost surely, 2^1155477144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1155477144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1488780720).

1155477144 is an abundant number, since it is smaller than the sum of its proper divisors (1822084296).

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

1155477144 is a wasteful number, since it uses less digits than its factorization.

1155477144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4780 (or 4776 counting only the distinct ones).

The product of its digits is 78400, while the sum is 39.

The square root of 1155477144 is about 33992.3100715441. The cubic root of 1155477144 is about 1049.3502083908.

The spelling of 1155477144 in words is "one billion, one hundred fifty-five million, four hundred seventy-seven thousand, one hundred forty-four".