1253988343 has 4 divisors (see below), whose sum is σ = 1257262848. Its totient is φ = 1250713840.

The previous prime is 1253988287. The next prime is 1253988367. The reversal of 1253988343 is 3438893521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1253988343 - 2¹³ = 1253980151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1253988293 and 1253988302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253988383) 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, 1636678 + ... + 1637443.

It is an arithmetic number, because the mean of its divisors is an integer number (314315712).

Almost surely, 2^1253988343 is an apocalyptic number.

1253988343 is a deficient number, since it is larger than the sum of its proper divisors (3274505).

1253988343 is an equidigital number, since it uses as much as digits as its factorization.

1253988343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274504.

The product of its digits is 622080, while the sum is 46.

The square root of 1253988343 is about 35411.6978271305. The cubic root of 1253988343 is about 1078.3618119392.

The spelling of 1253988343 in words is "one billion, two hundred fifty-three million, nine hundred eighty-eight thousand, three hundred forty-three".