1155145144 has 32 divisors (see below), whose sum is σ = 2182500000. Its totient is φ = 573161472.

The previous prime is 1155145141. The next prime is 1155145153. The reversal of 1155145144 is 4415415511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155145141) 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, 924232 + ... + 925480.

It is an arithmetic number, because the mean of its divisors is an integer number (68203125).

Almost surely, 2^1155145144 is an apocalyptic number.

It is an amenable number.

1155145144 is a deficient number, since it is larger than the sum of its proper divisors (1027354856).

1155145144 is a wasteful number, since it uses less digits than its factorization.

1155145144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047 (or 2043 counting only the distinct ones).

The product of its digits is 8000, while the sum is 31.

The square root of 1155145144 is about 33987.4262632521. The cubic root of 1155145144 is about 1049.2496964816.

The spelling of 1155145144 in words is "one billion, one hundred fifty-five million, one hundred forty-five thousand, one hundred forty-four".