1155144546 has 24 divisors (see below), whose sum is σ = 2512059264. Its totient is φ = 383625720.

The previous prime is 1155144541. The next prime is 1155144547. The reversal of 1155144546 is 6454415511.

1155144546 is a `hidden beast` number, since 11 + 551 + 44 + 54 + 6 = 666.

It is a super-2 number, since 2×1155144546² = 2668717844307092232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1155144546.

It is not an unprimeable number, because it can be changed into a prime (1155144541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113526 + ... + 123281.

It is an arithmetic number, because the mean of its divisors is an integer number (104669136).

Almost surely, 2^1155144546 is an apocalyptic number.

1155144546 is an abundant number, since it is smaller than the sum of its proper divisors (1356914718).

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

1155144546 is a wasteful number, since it uses less digits than its factorization.

1155144546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237086 (or 237083 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 1155144546 is about 33987.4174658799. The cubic root of 1155144546 is about 1049.2495154217.

The spelling of 1155144546 in words is "one billion, one hundred fifty-five million, one hundred forty-four thousand, five hundred forty-six".