1979669701 has 2 divisors, whose sum is σ = 1979669702. Its totient is φ = 1979669700.

The previous prime is 1979669693. The next prime is 1979669753. The reversal of 1979669701 is 1079669791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1170324100 + 809345601 = 34210^2 + 28449^2 .

It is a cyclic number.

It is not a de Polignac number, because 1979669701 - 2³ = 1979669693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979669761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989834850 + 989834851.

It is an arithmetic number, because the mean of its divisors is an integer number (989834851).

Almost surely, 2^1979669701 is an apocalyptic number.

It is an amenable number.

1979669701 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979669701 is an equidigital number, since it uses as much as digits as its factorization.

1979669701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1285956, while the sum is 55.

The square root of 1979669701 is about 44493.4793087706. The cubic root of 1979669701 is about 1255.6374070396.

The spelling of 1979669701 in words is "one billion, nine hundred seventy-nine million, six hundred sixty-nine thousand, seven hundred one".