1994362503961 has 3 divisors (see below), whose sum is σ = 1994363916181. Its totient is φ = 1994361091742.

The previous prime is 1994362503911. The next prime is 1994362504003. The reversal of 1994362503961 is 1693052634991.

The square root of 1994362503961 is 1412219.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1994362503961 - 2²¹ = 1994360406809 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1994362503896 and 1994362503905.

It is not an unprimeable number, because it can be changed into a prime (1994362503911) 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 in 2 ways as a sum of consecutive naturals, for example, 706110 + ... + 2118328.

Almost surely, 2^{1994362503961} is an apocalyptic number.

1994362503961 is the 1412219-th square number.

1994362503961 is the 706110-th centered octagonal number.

It is an amenable number.

1994362503961 is a deficient number, since it is larger than the sum of its proper divisors (1412220).

1994362503961 is an frugal number, since it uses more digits than its factorization.

1994362503961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2824438 (or 1412219 counting only the distinct ones).

The product of its (nonzero) digits is 9447840, while the sum is 58.

The spelling of 1994362503961 in words is "one trillion, nine hundred ninety-four billion, three hundred sixty-two million, five hundred three thousand, nine hundred sixty-one".