1979089628 has 48 divisors (see below), whose sum is σ = 3719520000. Its totient is φ = 918586368.

The previous prime is 1979089627. The next prime is 1979089643. The reversal of 1979089628 is 8269809791.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1979089627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2012825 + ... + 2013807.

It is an arithmetic number, because the mean of its divisors is an integer number (77490000).

Almost surely, 2^1979089628 is an apocalyptic number.

It is an amenable number.

1979089628 is a deficient number, since it is larger than the sum of its proper divisors (1740430372).

1979089628 is a wasteful number, since it uses less digits than its factorization.

1979089628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 59.

The square root of 1979089628 is about 44486.9602018389. The cubic root of 1979089628 is about 1255.5147548435.

The spelling of 1979089628 in words is "one billion, nine hundred seventy-nine million, eighty-nine thousand, six hundred twenty-eight".