494251996749 has 16 divisors (see below), whose sum is σ = 753611143680. Its totient is φ = 282255246000.

The previous prime is 494251996697. The next prime is 494251996781. The reversal of 494251996749 is 947699152494.

It is a happy number.

It is not a de Polignac number, because 494251996749 - 2⁹ = 494251996237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494251996789) 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 15 ways as a sum of consecutive naturals, for example, 7234627 + ... + 7302624.

It is an arithmetic number, because the mean of its divisors is an integer number (47100696480).

Almost surely, 2^494251996749 is an apocalyptic number.

It is an amenable number.

494251996749 is a deficient number, since it is larger than the sum of its proper divisors (259359146931).

494251996749 is a wasteful number, since it uses less digits than its factorization.

494251996749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14538880.

The product of its digits is 176359680, while the sum is 69.

The spelling of 494251996749 in words is "four hundred ninety-four billion, two hundred fifty-one million, nine hundred ninety-six thousand, seven hundred forty-nine".