1253215898 has 8 divisors (see below), whose sum is σ = 2050716960. Its totient is φ = 569643580.

The previous prime is 1253215891. The next prime is 1253215907. The reversal of 1253215898 is 8985123521.

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 (1253215891) 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, 28482158 + ... + 28482201.

It is an arithmetic number, because the mean of its divisors is an integer number (256339620).

Almost surely, 2^1253215898 is an apocalyptic number.

1253215898 is a deficient number, since it is larger than the sum of its proper divisors (797501062).

1253215898 is a wasteful number, since it uses less digits than its factorization.

1253215898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56964372.

The product of its digits is 172800, while the sum is 44.

The square root of 1253215898 is about 35400.7895109699. The cubic root of 1253215898 is about 1078.1403462219.

The spelling of 1253215898 in words is "one billion, two hundred fifty-three million, two hundred fifteen thousand, eight hundred ninety-eight".