1929212972 has 24 divisors (see below), whose sum is σ = 3590089776. Its totient is φ = 903961088.

The previous prime is 1929212963. The next prime is 1929213007. The reversal of 1929212972 is 2792129291.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45038 + ... + 76725.

It is an arithmetic number, because the mean of its divisors is an integer number (149587074).

Almost surely, 2^1929212972 is an apocalyptic number.

It is an amenable number.

1929212972 is a deficient number, since it is larger than the sum of its proper divisors (1660876804).

1929212972 is a wasteful number, since it uses less digits than its factorization.

1929212972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122017 (or 122015 counting only the distinct ones).

The product of its digits is 81648, while the sum is 44.

The square root of 1929212972 is about 43922.8069685898. The cubic root of 1929212972 is about 1244.8778065372.

The spelling of 1929212972 in words is "one billion, nine hundred twenty-nine million, two hundred twelve thousand, nine hundred seventy-two".