1155993754 has 16 divisors (see below), whose sum is σ = 1810278720. Its totient is φ = 552592480.

The previous prime is 1155993743. The next prime is 1155993757. The reversal of 1155993754 is 4573995511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1155993698 and 1155993707.

It is not an unprimeable number, because it can be changed into a prime (1155993757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111462 + ... + 121390.

It is an arithmetic number, because the mean of its divisors is an integer number (113142420).

Almost surely, 2^1155993754 is an apocalyptic number.

1155993754 is a deficient number, since it is larger than the sum of its proper divisors (654284966).

1155993754 is a wasteful number, since it uses less digits than its factorization.

1155993754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12485.

The product of its digits is 850500, while the sum is 49.

The square root of 1155993754 is about 33999.9081469348. The cubic root of 1155993754 is about 1049.5065720895.

The spelling of 1155993754 in words is "one billion, one hundred fifty-five million, nine hundred ninety-three thousand, seven hundred fifty-four".