1208613641 has 2 divisors, whose sum is σ = 1208613642. Its totient is φ = 1208613640.

The previous prime is 1208613619. The next prime is 1208613667. The reversal of 1208613641 is 1463168021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1057225225 + 151388416 = 32515^2 + 12304^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208613641 - 2⁶ = 1208613577 is a prime.

It is a super-2 number, since 2×1208613641² = 2921493866422553762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1208613598 and 1208613607.

It is not a weakly prime, because it can be changed into another prime (1208613611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 604306820 + 604306821.

It is an arithmetic number, because the mean of its divisors is an integer number (604306821).

Almost surely, 2^1208613641 is an apocalyptic number.

It is an amenable number.

1208613641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1208613641 is an equidigital number, since it uses as much as digits as its factorization.

1208613641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1208613641 is about 34765.1210410664. The cubic root of 1208613641 is about 1065.1951095436.

The spelling of 1208613641 in words is "one billion, two hundred eight million, six hundred thirteen thousand, six hundred forty-one".