10280389946 has 4 divisors (see below), whose sum is σ = 15420584922. Its totient is φ = 5140194972.

The previous prime is 10280389937. The next prime is 10280389969. The reversal of 10280389946 is 64998308201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6762595225 + 3517794721 = 82235^2 + 59311^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10280389894 and 10280389903.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2570097485 + ... + 2570097488.

Almost surely, 2^10280389946 is an apocalyptic number.

10280389946 is a deficient number, since it is larger than the sum of its proper divisors (5140194976).

10280389946 is an equidigital number, since it uses as much as digits as its factorization.

10280389946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5140194975.

The product of its (nonzero) digits is 746496, while the sum is 50.

The spelling of 10280389946 in words is "ten billion, two hundred eighty million, three hundred eighty-nine thousand, nine hundred forty-six".