1921229196 has 24 divisors (see below), whose sum is σ = 4507917120. Its totient is φ = 636831312.

The previous prime is 1921229147. The next prime is 1921229201. The reversal of 1921229196 is 6919221291.

It is a super-2 number, since 2×1921229196² = 7382243247125612832, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445066 + ... + 449361.

It is an arithmetic number, because the mean of its divisors is an integer number (187829880).

Almost surely, 2^1921229196 is an apocalyptic number.

It is an amenable number.

1921229196 is an abundant number, since it is smaller than the sum of its proper divisors (2586687924).

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

1921229196 is a wasteful number, since it uses less digits than its factorization.

1921229196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894613 (or 894611 counting only the distinct ones).

The product of its digits is 34992, while the sum is 42.

The square root of 1921229196 is about 43831.8285723970. The cubic root of 1921229196 is about 1243.1581817558.

The spelling of 1921229196 in words is "one billion, nine hundred twenty-one million, two hundred twenty-nine thousand, one hundred ninety-six".