1966302077 has 4 divisors (see below), whose sum is σ = 2069791680. Its totient is φ = 1862812476.

The previous prime is 1966302061. The next prime is 1966302083. The reversal of 1966302077 is 7702036691.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7702036691 = 53 ⋅145321447.

It is a cyclic number.

It is not a de Polignac number, because 1966302077 - 2⁴ = 1966302061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966302047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51744773 + ... + 51744810.

It is an arithmetic number, because the mean of its divisors is an integer number (517447920).

Almost surely, 2^1966302077 is an apocalyptic number.

It is an amenable number.

1966302077 is a deficient number, since it is larger than the sum of its proper divisors (103489603).

1966302077 is a wasteful number, since it uses less digits than its factorization.

1966302077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103489602.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 1966302077 is about 44343.0048260151. The cubic root of 1966302077 is about 1252.8048114788.

The spelling of 1966302077 in words is "one billion, nine hundred sixty-six million, three hundred two thousand, seventy-seven".