1245454851 has 8 divisors (see below), whose sum is σ = 1717868880. Its totient is φ = 801672032.

The previous prime is 1245454843. The next prime is 1245454907. The reversal of 1245454851 is 1584545421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1245454851 - 2³ = 1245454843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1245454831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7157700 + ... + 7157873.

It is an arithmetic number, because the mean of its divisors is an integer number (214733610).

Almost surely, 2^1245454851 is an apocalyptic number.

1245454851 is a deficient number, since it is larger than the sum of its proper divisors (472414029).

1245454851 is a wasteful number, since it uses less digits than its factorization.

1245454851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315605.

The product of its digits is 128000, while the sum is 39.

The square root of 1245454851 is about 35291.0024085460. The cubic root of 1245454851 is about 1075.9101291122.

The spelling of 1245454851 in words is "one billion, two hundred forty-five million, four hundred fifty-four thousand, eight hundred fifty-one".