1461822457 has 2 divisors, whose sum is σ = 1461822458. Its totient is φ = 1461822456.

The previous prime is 1461822443. The next prime is 1461822497. The reversal of 1461822457 is 7542281641.

It is an a-pointer prime, because the next prime (1461822497) can be obtained adding 1461822457 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1306171881 + 155650576 = 36141^2 + 12476^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461822457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1461822407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 730911228 + 730911229.

It is an arithmetic number, because the mean of its divisors is an integer number (730911229).

Almost surely, 2^1461822457 is an apocalyptic number.

It is an amenable number.

1461822457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461822457 is an equidigital number, since it uses as much as digits as its factorization.

1461822457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 107520, while the sum is 40.

The square root of 1461822457 is about 38233.7868514224. The cubic root of 1461822457 is about 1134.9190254483.

The spelling of 1461822457 in words is "one billion, four hundred sixty-one million, eight hundred twenty-two thousand, four hundred fifty-seven".