1263172922 has 8 divisors (see below), whose sum is σ = 2067010272. Its totient is φ = 574169500.

The previous prime is 1263172891. The next prime is 1263172951. The reversal of 1263172922 is 2292713621.

It is a happy number.

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

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 in 3 ways as a sum of consecutive naturals, for example, 28708454 + ... + 28708497.

It is an arithmetic number, because the mean of its divisors is an integer number (258376284).

Almost surely, 2^1263172922 is an apocalyptic number.

1263172922 is a deficient number, since it is larger than the sum of its proper divisors (803837350).

1263172922 is a wasteful number, since it uses less digits than its factorization.

1263172922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57416964.

The product of its digits is 18144, while the sum is 35.

The square root of 1263172922 is about 35541.1440727504. The cubic root of 1263172922 is about 1080.9881565290.

The spelling of 1263172922 in words is "one billion, two hundred sixty-three million, one hundred seventy-two thousand, nine hundred twenty-two".