1213119547 has 2 divisors, whose sum is σ = 1213119548. Its totient is φ = 1213119546.

The previous prime is 1213119493. The next prime is 1213119577. The reversal of 1213119547 is 7459113121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213119547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1213119577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606559773 + 606559774.

It is an arithmetic number, because the mean of its divisors is an integer number (606559774).

Almost surely, 2^1213119547 is an apocalyptic number.

1213119547 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213119547 is an equidigital number, since it uses as much as digits as its factorization.

1213119547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 1213119547 is about 34829.8657333042. The cubic root of 1213119547 is about 1066.5172074553.

The spelling of 1213119547 in words is "one billion, two hundred thirteen million, one hundred nineteen thousand, five hundred forty-seven".