1213456548 has 24 divisors (see below), whose sum is σ = 2832580800. Its totient is φ = 404316640.

The previous prime is 1213456547. The next prime is 1213456553. The reversal of 1213456548 is 8456543121.

It is not an unprimeable number, because it can be changed into a prime (1213456547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10753 + ... + 50423.

It is an arithmetic number, because the mean of its divisors is an integer number (118024200).

Almost surely, 2^1213456548 is an apocalyptic number.

It is an amenable number.

1213456548 is an abundant number, since it is smaller than the sum of its proper divisors (1619124252).

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

1213456548 is a wasteful number, since it uses less digits than its factorization.

1213456548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42227 (or 42225 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 1213456548 is about 34834.7032138929. The cubic root of 1213456548 is about 1066.6159567472.

Adding to 1213456548 its reverse (8456543121), we get a palindrome (9669999669).

The spelling of 1213456548 in words is "one billion, two hundred thirteen million, four hundred fifty-six thousand, five hundred forty-eight".