1213456546 has 8 divisors (see below), whose sum is σ = 1915984080. Its totient is φ = 574795188.

The previous prime is 1213456523. The next prime is 1213456547. The reversal of 1213456546 is 6456543121.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 15966496 + ... + 15966571.

It is an arithmetic number, because the mean of its divisors is an integer number (239498010).

Almost surely, 2^1213456546 is an apocalyptic number.

1213456546 is a deficient number, since it is larger than the sum of its proper divisors (702527534).

1213456546 is a wasteful number, since it uses less digits than its factorization.

1213456546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31933088.

The product of its digits is 86400, while the sum is 37.

The square root of 1213456546 is about 34834.7031851859. The cubic root of 1213456546 is about 1066.6159561613.

Adding to 1213456546 its reverse (6456543121), we get a palindrome (7669999667).

The spelling of 1213456546 in words is "one billion, two hundred thirteen million, four hundred fifty-six thousand, five hundred forty-six".