1253787963 has 8 divisors (see below), whose sum is σ = 1725643776. Its totient is φ = 808895400.

The previous prime is 1253787947. The next prime is 1253787989. The reversal of 1253787963 is 3697873521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1253787963 - 2⁴ = 1253787947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1253787263) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6740703 + ... + 6740888.

It is an arithmetic number, because the mean of its divisors is an integer number (215705472).

Almost surely, 2^1253787963 is an apocalyptic number.

1253787963 is a deficient number, since it is larger than the sum of its proper divisors (471855813).

1253787963 is a wasteful number, since it uses less digits than its factorization.

1253787963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13481625.

The product of its digits is 1905120, while the sum is 51.

The square root of 1253787963 is about 35408.8684230378. The cubic root of 1253787963 is about 1078.3043702435.

The spelling of 1253787963 in words is "one billion, two hundred fifty-three million, seven hundred eighty-seven thousand, nine hundred sixty-three".