1946542099 has 2 divisors, whose sum is σ = 1946542100. Its totient is φ = 1946542098.

The previous prime is 1946542079. The next prime is 1946542121. The reversal of 1946542099 is 9902456491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1946542099 - 2²¹ = 1944444947 is a prime.

It is a super-2 number, since 2×1946542099² = 7578052286358651602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1946542009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 973271049 + 973271050.

It is an arithmetic number, because the mean of its divisors is an integer number (973271050).

Almost surely, 2^1946542099 is an apocalyptic number.

1946542099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1946542099 is an equidigital number, since it uses as much as digits as its factorization.

1946542099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 699840, while the sum is 49.

The square root of 1946542099 is about 44119.6339400045. The cubic root of 1946542099 is about 1248.5940670616.

The spelling of 1946542099 in words is "one billion, nine hundred forty-six million, five hundred forty-two thousand, ninety-nine".