1946473657 has 2 divisors, whose sum is σ = 1946473658. Its totient is φ = 1946473656.

The previous prime is 1946473603. The next prime is 1946473691. The reversal of 1946473657 is 7563746491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1913537536 + 32936121 = 43744^2 + 5739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1946473657 is a prime.

It is not a weakly prime, because it can be changed into another prime (1946477657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973236828 + 973236829.

It is an arithmetic number, because the mean of its divisors is an integer number (973236829).

Almost surely, 2^1946473657 is an apocalyptic number.

It is an amenable number.

1946473657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946473657 is an equidigital number, since it uses as much as digits as its factorization.

1946473657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 52.

The square root of 1946473657 is about 44118.8582921181. The cubic root of 1946473657 is about 1248.5794330298.

The spelling of 1946473657 in words is "one billion, nine hundred forty-six million, four hundred seventy-three thousand, six hundred fifty-seven".