1253272191 has 16 divisors (see below), whose sum is σ = 1696826880. Its totient is φ = 822647840.

The previous prime is 1253272187. The next prime is 1253272199. The reversal of 1253272191 is 1912723521.

It is a cyclic number.

It is not a de Polignac number, because 1253272191 - 2² = 1253272187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253272199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175201 + ... + 182213.

It is an arithmetic number, because the mean of its divisors is an integer number (106051680).

Almost surely, 2^1253272191 is an apocalyptic number.

1253272191 is a deficient number, since it is larger than the sum of its proper divisors (443554689).

1253272191 is an equidigital number, since it uses as much as digits as its factorization.

1253272191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7926.

The product of its digits is 7560, while the sum is 33.

The square root of 1253272191 is about 35401.5845831793. The cubic root of 1253272191 is about 1078.1564889169.

The spelling of 1253272191 in words is "one billion, two hundred fifty-three million, two hundred seventy-two thousand, one hundred ninety-one".