1011153812 has 24 divisors (see below), whose sum is σ = 1904331240. Its totient is φ = 468034560.

The previous prime is 1011153779. The next prime is 1011153823. The reversal of 1011153812 is 2183511101.

It can be written as a sum of positive squares in 4 ways, for example, as 214446736 + 796707076 = 14644^2 + 28226^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117737 + ... + 126032.

It is an arithmetic number, because the mean of its divisors is an integer number (79347135).

Almost surely, 2^1011153812 is an apocalyptic number.

It is an amenable number.

1011153812 is a deficient number, since it is larger than the sum of its proper divisors (893177428).

1011153812 is a wasteful number, since it uses less digits than its factorization.

1011153812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243851 (or 243849 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 1011153812 is about 31798.6448138910. The cubic root of 1011153812 is about 1003.7041992990.

Adding to 1011153812 its reverse (2183511101), we get a palindrome (3194664913).

The spelling of 1011153812 in words is "one billion, eleven million, one hundred fifty-three thousand, eight hundred twelve".