1461533921 has 2 divisors, whose sum is σ = 1461533922. Its totient is φ = 1461533920.

The previous prime is 1461533893. The next prime is 1461533951. The reversal of 1461533921 is 1293351641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1147854400 + 313679521 = 33880^2 + 17711^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461533921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1461533951) 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, 730766960 + 730766961.

It is an arithmetic number, because the mean of its divisors is an integer number (730766961).

Almost surely, 2^1461533921 is an apocalyptic number.

It is an amenable number.

1461533921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1461533921 is an equidigital number, since it uses as much as digits as its factorization.

1461533921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 35.

The square root of 1461533921 is about 38230.0133533851. The cubic root of 1461533921 is about 1134.8443500453.

The spelling of 1461533921 in words is "one billion, four hundred sixty-one million, five hundred thirty-three thousand, nine hundred twenty-one".