19945952954 has 8 divisors (see below), whose sum is σ = 30183699060. Its totient is φ = 9884719936.

The previous prime is 19945952927. The next prime is 19945952963. The reversal of 19945952954 is 45925954991.

It can be written as a sum of positive squares in 2 ways, for example, as 19837314025 + 108638929 = 140845^2 + 10423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×19945952954² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44127989 + ... + 44128440.

Almost surely, 2^19945952954 is an apocalyptic number.

19945952954 is a deficient number, since it is larger than the sum of its proper divisors (10237746106).

19945952954 is a wasteful number, since it uses less digits than its factorization.

19945952954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88256544.

The product of its digits is 26244000, while the sum is 62.

The spelling of 19945952954 in words is "nineteen billion, nine hundred forty-five million, nine hundred fifty-two thousand, nine hundred fifty-four".