19675093946 has 4 divisors (see below), whose sum is σ = 29512640922. Its totient is φ = 9837546972.

The previous prime is 19675093943. The next prime is 19675093957. The reversal of 19675093946 is 64939057691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64939057691 = 207799 ⋅312509.

It can be written as a sum of positive squares in only one way, i.e., 19421488321 + 253605625 = 139361^2 + 15925^2 .

It is not an unprimeable number, because it can be changed into a prime (19675093943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4918773485 + ... + 4918773488.

Almost surely, 2^19675093946 is an apocalyptic number.

19675093946 is a deficient number, since it is larger than the sum of its proper divisors (9837546976).

19675093946 is an equidigital number, since it uses as much as digits as its factorization.

19675093946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9837546975.

The product of its (nonzero) digits is 11022480, while the sum is 59.

The spelling of 19675093946 in words is "nineteen billion, six hundred seventy-five million, ninety-three thousand, nine hundred forty-six".