1461994811 has 2 divisors, whose sum is σ = 1461994812. Its totient is φ = 1461994810.

The previous prime is 1461994799. The next prime is 1461994823. The reversal of 1461994811 is 1184991641.

It is a balanced prime because it is at equal distance from previous prime (1461994799) and next prime (1461994823).

It is an emirp because it is prime and its reverse (1184991641) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461994811 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1461994861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730997405 + 730997406.

It is an arithmetic number, because the mean of its divisors is an integer number (730997406).

Almost surely, 2^1461994811 is an apocalyptic number.

1461994811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461994811 is an equidigital number, since it uses as much as digits as its factorization.

1461994811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 44.

The square root of 1461994811 is about 38236.0407338417. The cubic root of 1461994811 is about 1134.9636273413.

The spelling of 1461994811 in words is "one billion, four hundred sixty-one million, nine hundred ninety-four thousand, eight hundred eleven".