1146811578 has 64 divisors (see below), whose sum is σ = 2534025600. Its totient is φ = 343123200.

The previous prime is 1146811573. The next prime is 1146811621. The reversal of 1146811578 is 8751186411.

It is not an unprimeable number, because it can be changed into a prime (1146811571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2723808 + ... + 2724228.

It is an arithmetic number, because the mean of its divisors is an integer number (39594150).

Almost surely, 2^1146811578 is an apocalyptic number.

1146811578 is an abundant number, since it is smaller than the sum of its proper divisors (1387214022).

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

1146811578 is a wasteful number, since it uses less digits than its factorization.

1146811578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its digits is 53760, while the sum is 42.

The square root of 1146811578 is about 33864.6065679198. The cubic root of 1146811578 is about 1046.7204029145.

Adding to 1146811578 its reverse (8751186411), we get a palindrome (9897997989).

The spelling of 1146811578 in words is "one billion, one hundred forty-six million, eight hundred eleven thousand, five hundred seventy-eight".