1241561673 has 12 divisors (see below), whose sum is σ = 1956400368. Its totient is φ = 752461560.

The previous prime is 1241561647. The next prime is 1241561683. The reversal of 1241561673 is 3761651421.

1241561673 is a `hidden beast` number, since 1 + 24 + 1 + 561 + 6 + 73 = 666.

It is not a de Polignac number, because 1241561673 - 2⁵ = 1241561641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1241561683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6270415 + ... + 6270612.

It is an arithmetic number, because the mean of its divisors is an integer number (163033364).

Almost surely, 2^1241561673 is an apocalyptic number.

It is an amenable number.

1241561673 is a deficient number, since it is larger than the sum of its proper divisors (714838695).

1241561673 is a wasteful number, since it uses less digits than its factorization.

1241561673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12541044 (or 12541041 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1241561673 is about 35235.8010126065. The cubic root of 1241561673 is about 1074.7878933966.

It can be divided in two parts, 12415 and 61673, that added together give a cube (74088 = 42³).

The spelling of 1241561673 in words is "one billion, two hundred forty-one million, five hundred sixty-one thousand, six hundred seventy-three".