1979129628 has 72 divisors (see below), whose sum is σ = 5811260000. Its totient is φ = 556191360.

The previous prime is 1979129611. The next prime is 1979129687. The reversal of 1979129628 is 8269219791.

1979129628 is a `hidden beast` number, since 1 + 9 + 7 + 9 + 1 + 2 + 9 + 628 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49003 + ... + 79746.

Almost surely, 2^1979129628 is an apocalyptic number.

1979129628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1979129628 is an abundant number, since it is smaller than the sum of its proper divisors (3832130372).

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

1979129628 is a wasteful number, since it uses less digits than its factorization.

1979129628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128827 (or 128822 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 1979129628 is about 44487.4097695067. The cubic root of 1979129628 is about 1255.5232133204.

The spelling of 1979129628 in words is "one billion, nine hundred seventy-nine million, one hundred twenty-nine thousand, six hundred twenty-eight".