1245208845 has 16 divisors (see below), whose sum is σ = 2078957952. Its totient is φ = 635236800.

The previous prime is 1245208813. The next prime is 1245208883. The reversal of 1245208845 is 5488025421.

It is a happy number.

It is not a de Polignac number, because 1245208845 - 2⁵ = 1245208813 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1804306 + ... + 1804995.

It is an arithmetic number, because the mean of its divisors is an integer number (129934872).

Almost surely, 2^1245208845 is an apocalyptic number.

1245208845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1245208845 is a deficient number, since it is larger than the sum of its proper divisors (833749107).

1245208845 is a wasteful number, since it uses less digits than its factorization.

1245208845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609332.

The product of its (nonzero) digits is 102400, while the sum is 39.

The square root of 1245208845 is about 35287.5168437792. The cubic root of 1245208845 is about 1075.8392854425.

The spelling of 1245208845 in words is "one billion, two hundred forty-five million, two hundred eight thousand, eight hundred forty-five".