1155141512 has 64 divisors (see below), whose sum is σ = 2589511680. Its totient is φ = 472329792.

The previous prime is 1155141511. The next prime is 1155141521. The reversal of 1155141512 is 2151415511.

It is a happy number.

It is a super-2 number, since 2×1155141512² = 2668703825491292288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1155141511) 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 15 ways as a sum of consecutive naturals, for example, 646973 + ... + 648755.

It is an arithmetic number, because the mean of its divisors is an integer number (40461120).

Almost surely, 2^1155141512 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 1155141512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294755840).

1155141512 is an abundant number, since it is smaller than the sum of its proper divisors (1434370168).

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

1155141512 is a wasteful number, since it uses less digits than its factorization.

1155141512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 2318 counting only the distinct ones).

The product of its digits is 1000, while the sum is 26.

The square root of 1155141512 is about 33987.3728316856. The cubic root of 1155141512 is about 1049.2485967991.

The spelling of 1155141512 in words is "one billion, one hundred fifty-five million, one hundred forty-one thousand, five hundred twelve".