1229156922 has 16 divisors (see below), whose sum is σ = 2809501632. Its totient is φ = 351187680.

The previous prime is 1229156881. The next prime is 1229156923. The reversal of 1229156922 is 2296519221.

It is not an unprimeable number, because it can be changed into a prime (1229156923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14632779 + ... + 14632862.

It is an arithmetic number, because the mean of its divisors is an integer number (175593852).

Almost surely, 2^1229156922 is an apocalyptic number.

1229156922 is an abundant number, since it is smaller than the sum of its proper divisors (1580344710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1229156922 is a wasteful number, since it uses less digits than its factorization.

1229156922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29265653.

The product of its digits is 38880, while the sum is 39.

The square root of 1229156922 is about 35059.3343062871. The cubic root of 1229156922 is about 1071.1964146701.

The spelling of 1229156922 in words is "one billion, two hundred twenty-nine million, one hundred fifty-six thousand, nine hundred twenty-two".