1945614977 has 2 divisors, whose sum is σ = 1945614978. Its totient is φ = 1945614976.

The previous prime is 1945614971. The next prime is 1945615019. The reversal of 1945614977 is 7794165491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1129027201 + 816587776 = 33601^2 + 28576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1945614977 - 2⁸ = 1945614721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1945614971) 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 as a sum of consecutive naturals, namely, 972807488 + 972807489.

It is an arithmetic number, because the mean of its divisors is an integer number (972807489).

Almost surely, 2^1945614977 is an apocalyptic number.

It is an amenable number.

1945614977 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945614977 is an equidigital number, since it uses as much as digits as its factorization.

1945614977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1905120, while the sum is 53.

The square root of 1945614977 is about 44109.1257791401. The cubic root of 1945614977 is about 1248.3958038846.

The spelling of 1945614977 in words is "one billion, nine hundred forty-five million, six hundred fourteen thousand, nine hundred seventy-seven".