1416441991 has 2 divisors, whose sum is σ = 1416441992. Its totient is φ = 1416441990.

The previous prime is 1416441979. The next prime is 1416442019. The reversal of 1416441991 is 1991446141.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1416441991 - 2¹⁹ = 1415917703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1416441941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708220995 + 708220996.

It is an arithmetic number, because the mean of its divisors is an integer number (708220996).

Almost surely, 2^1416441991 is an apocalyptic number.

1416441991 is a deficient number, since it is larger than the sum of its proper divisors (1).

1416441991 is an equidigital number, since it uses as much as digits as its factorization.

1416441991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 1416441991 is about 37635.6478753854. The cubic root of 1416441991 is about 1123.0513072364.

The spelling of 1416441991 in words is "one billion, four hundred sixteen million, four hundred forty-one thousand, nine hundred ninety-one".