1253351218 has 16 divisors (see below), whose sum is σ = 2169877824. Its totient is φ = 531831600.

The previous prime is 1253351179. The next prime is 1253351251. The reversal of 1253351218 is 8121533521.

It is a self number, because there is not a number n which added to its sum of digits gives 1253351218.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441780 + ... + 444607.

It is an arithmetic number, because the mean of its divisors is an integer number (135617364).

Almost surely, 2^1253351218 is an apocalyptic number.

1253351218 is a deficient number, since it is larger than the sum of its proper divisors (916526606).

1253351218 is a wasteful number, since it uses less digits than its factorization.

1253351218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886497.

The product of its digits is 7200, while the sum is 31.

The square root of 1253351218 is about 35402.7007161883. The cubic root of 1253351218 is about 1078.1791500442.

Adding to 1253351218 its reverse (8121533521), we get a palindrome (9374884739).

The spelling of 1253351218 in words is "one billion, two hundred fifty-three million, three hundred fifty-one thousand, two hundred eighteen".