1949663616351 has 32 divisors (see below), whose sum is σ = 2954712784896. Its totient is φ = 1132810764000.

The previous prime is 1949663616331. The next prime is 1949663616353. The reversal of 1949663616351 is 1536163669491.

It is a happy number.

It is not a de Polignac number, because 1949663616351 - 2¹⁴ = 1949663599967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949663616353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8796285 + ... + 9015206.

It is an arithmetic number, because the mean of its divisors is an integer number (92334774528).

Almost surely, 2^{1949663616351} is an apocalyptic number.

1949663616351 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1949663616351 is a deficient number, since it is larger than the sum of its proper divisors (1005049168545).

1949663616351 is a wasteful number, since it uses less digits than its factorization.

1949663616351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17811643.

The product of its digits is 18895680, while the sum is 60.

The spelling of 1949663616351 in words is "one trillion, nine hundred forty-nine billion, six hundred sixty-three million, six hundred sixteen thousand, three hundred fifty-one".