1946863801 has 2 divisors, whose sum is σ = 1946863802. Its totient is φ = 1946863800.

The previous prime is 1946863777. The next prime is 1946863837. The reversal of 1946863801 is 1083686491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1916338176 + 30525625 = 43776^2 + 5525^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946863801 - 2⁷ = 1946863673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1946863871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973431900 + 973431901.

It is an arithmetic number, because the mean of its divisors is an integer number (973431901).

Almost surely, 2^1946863801 is an apocalyptic number.

It is an amenable number.

1946863801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946863801 is an equidigital number, since it uses as much as digits as its factorization.

1946863801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1946863801 is about 44123.2795811916. The cubic root of 1946863801 is about 1248.6628476756.

The spelling of 1946863801 in words is "one billion, nine hundred forty-six million, eight hundred sixty-three thousand, eight hundred one".