1979774147 has 8 divisors (see below), whose sum is σ = 2138213616. Its totient is φ = 1822213152.

The previous prime is 1979774129. The next prime is 1979774161. The reversal of 1979774147 is 7414779791.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1979774147 - 2¹⁰ = 1979773123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1979774092 and 1979774101.

It is not an unprimeable number, because it can be changed into a prime (1979774107) 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, 214928 + ... + 223949.

It is an arithmetic number, because the mean of its divisors is an integer number (267276702).

Almost surely, 2^1979774147 is an apocalyptic number.

1979774147 is a deficient number, since it is larger than the sum of its proper divisors (158439469).

1979774147 is a wasteful number, since it uses less digits than its factorization.

1979774147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439237.

The product of its digits is 3111696, while the sum is 56.

The square root of 1979774147 is about 44494.6530158400. The cubic root of 1979774147 is about 1255.6594888374.

The spelling of 1979774147 in words is "one billion, nine hundred seventy-nine million, seven hundred seventy-four thousand, one hundred forty-seven".