1253718734 has 4 divisors (see below), whose sum is σ = 1880578104. Its totient is φ = 626859366.

The previous prime is 1253718721. The next prime is 1253718751. The reversal of 1253718734 is 4378173521.

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

It is a junction number, because it is equal to n+sod(n) for n = 1253718691 and 1253718700.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313429682 + ... + 313429685.

It is an arithmetic number, because the mean of its divisors is an integer number (470144526).

Almost surely, 2^1253718734 is an apocalyptic number.

1253718734 is a deficient number, since it is larger than the sum of its proper divisors (626859370).

1253718734 is an equidigital number, since it uses as much as digits as its factorization.

1253718734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626859369.

The product of its digits is 141120, while the sum is 41.

The square root of 1253718734 is about 35407.8908437088. The cubic root of 1253718734 is about 1078.2845233716.

The spelling of 1253718734 in words is "one billion, two hundred fifty-three million, seven hundred eighteen thousand, seven hundred thirty-four".