1946158481 has 2 divisors, whose sum is σ = 1946158482. Its totient is φ = 1946158480.

The previous prime is 1946158451. The next prime is 1946158499. The reversal of 1946158481 is 1848516491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1082739025 + 863419456 = 32905^2 + 29384^2 .

It is a cyclic number.

It is not a de Polignac number, because 1946158481 - 2²⁶ = 1879049617 is a prime.

It is a super-2 number, since 2×1946158481² = 7575065666336454722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1946158411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973079240 + 973079241.

It is an arithmetic number, because the mean of its divisors is an integer number (973079241).

Almost surely, 2^1946158481 is an apocalyptic number.

It is an amenable number.

1946158481 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946158481 is an equidigital number, since it uses as much as digits as its factorization.

1946158481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 276480, while the sum is 47.

The square root of 1946158481 is about 44115.2862509131. The cubic root of 1946158481 is about 1248.5120387599.

The spelling of 1946158481 in words is "one billion, nine hundred forty-six million, one hundred fifty-eight thousand, four hundred eighty-one".