19450691466 has 32 divisors (see below), whose sum is σ = 39837304320. Its totient is φ = 6327813744.

The previous prime is 19450691459. The next prime is 19450691467. The reversal of 19450691466 is 66419605491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19450691467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307245 + ... + 365103.

It is an arithmetic number, because the mean of its divisors is an integer number (1244915760).

Almost surely, 2^19450691466 is an apocalyptic number.

19450691466 is an abundant number, since it is smaller than the sum of its proper divisors (20386612854).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19450691466 is a wasteful number, since it uses less digits than its factorization.

19450691466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59210.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The spelling of 19450691466 in words is "nineteen billion, four hundred fifty million, six hundred ninety-one thousand, four hundred sixty-six".