1825461949 has 2 divisors, whose sum is σ = 1825461950. Its totient is φ = 1825461948.

The previous prime is 1825461943. The next prime is 1825461961. The reversal of 1825461949 is 9491645281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1566734724 + 258727225 = 39582^2 + 16085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1825461949 - 2¹³ = 1825453757 is a prime.

It is a super-2 number, since 2×1825461949² = 6664622654493757202, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1825461943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 912730974 + 912730975.

It is an arithmetic number, because the mean of its divisors is an integer number (912730975).

Almost surely, 2^1825461949 is an apocalyptic number.

It is an amenable number.

1825461949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1825461949 is an equidigital number, since it uses as much as digits as its factorization.

1825461949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 622080, while the sum is 49.

The square root of 1825461949 is about 42725.4250885816. The cubic root of 1825461949 is about 1222.1492949511.

The spelling of 1825461949 in words is "one billion, eight hundred twenty-five million, four hundred sixty-one thousand, nine hundred forty-nine".