1181464555 has 48 divisors (see below), whose sum is σ = 1601480160. Its totient is φ = 833670144.

The previous prime is 1181464547. The next prime is 1181464561. The reversal of 1181464555 is 5554641811.

It is not a de Polignac number, because 1181464555 - 2³ = 1181464547 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4265077 + ... + 4265353.

It is an arithmetic number, because the mean of its divisors is an integer number (33364170).

Almost surely, 2^1181464555 is an apocalyptic number.

1181464555 is a deficient number, since it is larger than the sum of its proper divisors (420015605).

1181464555 is a wasteful number, since it uses less digits than its factorization.

1181464555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476 (or 457 counting only the distinct ones).

The product of its digits is 96000, while the sum is 40.

The square root of 1181464555 is about 34372.4388864101. The cubic root of 1181464555 is about 1057.1588073396.

The spelling of 1181464555 in words is "one billion, one hundred eighty-one million, four hundred sixty-four thousand, five hundred fifty-five".