1946649847 has 2 divisors, whose sum is σ = 1946649848. Its totient is φ = 1946649846.

The previous prime is 1946649829. The next prime is 1946649863. The reversal of 1946649847 is 7489466491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1946649847 - 2²⁷ = 1812432119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1946649791 and 1946649800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1946629847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973324923 + 973324924.

It is an arithmetic number, because the mean of its divisors is an integer number (973324924).

Almost surely, 2^1946649847 is an apocalyptic number.

1946649847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946649847 is an equidigital number, since it uses as much as digits as its factorization.

1946649847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10450944, while the sum is 58.

The square root of 1946649847 is about 44120.8550121142. The cubic root of 1946649847 is about 1248.6171046713.

The spelling of 1946649847 in words is "one billion, nine hundred forty-six million, six hundred forty-nine thousand, eight hundred forty-seven".