1979146738 has 8 divisors (see below), whose sum is σ = 2968909020. Its totient is φ = 989510400.

The previous prime is 1979146721. The next prime is 1979146747. The reversal of 1979146738 is 8376419791.

It can be written as a sum of positive squares in 2 ways, for example, as 1933624729 + 45522009 = 43973^2 + 6747^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43938 + ... + 76738.

Almost surely, 2^1979146738 is an apocalyptic number.

1979146738 is a deficient number, since it is larger than the sum of its proper divisors (989762282).

1979146738 is a wasteful number, since it uses less digits than its factorization.

1979146738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62972.

The product of its digits is 2286144, while the sum is 55.

The square root of 1979146738 is about 44487.6020706893. The cubic root of 1979146738 is about 1255.5268313991.

The spelling of 1979146738 in words is "one billion, nine hundred seventy-nine million, one hundred forty-six thousand, seven hundred thirty-eight".