1206463961 has 2 divisors, whose sum is σ = 1206463962. Its totient is φ = 1206463960.

The previous prime is 1206463949. The next prime is 1206463987. The reversal of 1206463961 is 1693646021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1201315600 + 5148361 = 34660^2 + 2269^2 .

It is an emirp because it is prime and its reverse (1693646021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1206463961 - 2¹⁰ = 1206462937 is a prime.

It is not a weakly prime, because it can be changed into another prime (1206463931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603231980 + 603231981.

It is an arithmetic number, because the mean of its divisors is an integer number (603231981).

Almost surely, 2^1206463961 is an apocalyptic number.

It is an amenable number.

1206463961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206463961 is an equidigital number, since it uses as much as digits as its factorization.

1206463961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 1206463961 is about 34734.1900870022. The cubic root of 1206463961 is about 1064.5632043930.

The spelling of 1206463961 in words is "one billion, two hundred six million, four hundred sixty-three thousand, nine hundred sixty-one".