1155154012 has 12 divisors (see below), whose sum is σ = 2140432560. Its totient is φ = 543601856.

The previous prime is 1155154009. The next prime is 1155154019. The reversal of 1155154012 is 2104515511.

It is a super-2 number, since 2×1155154012² = 2668761582879392288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155154019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8493712 + ... + 8493847.

It is an arithmetic number, because the mean of its divisors is an integer number (178369380).

Almost surely, 2^1155154012 is an apocalyptic number.

It is an amenable number.

1155154012 is a deficient number, since it is larger than the sum of its proper divisors (985278548).

1155154012 is a wasteful number, since it uses less digits than its factorization.

1155154012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16987580 (or 16987578 counting only the distinct ones).

The product of its (nonzero) digits is 1000, while the sum is 25.

The square root of 1155154012 is about 33987.5567230126. The cubic root of 1155154012 is about 1049.2523814898.

Adding to 1155154012 its reverse (2104515511), we get a palindrome (3259669523).

The spelling of 1155154012 in words is "one billion, one hundred fifty-five million, one hundred fifty-four thousand, twelve".