19146919642 has 16 divisors (see below), whose sum is σ = 28857513600. Its totient is φ = 9527854960.

The previous prime is 19146919621. The next prime is 19146919651. The reversal of 19146919642 is 24691964191.

It is a self number, because there is not a number n which added to its sum of digits gives 19146919642.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339267 + ... + 391657.

It is an arithmetic number, because the mean of its divisors is an integer number (1803594600).

Almost surely, 2^19146919642 is an apocalyptic number.

19146919642 is a deficient number, since it is larger than the sum of its proper divisors (9710593958).

19146919642 is a wasteful number, since it uses less digits than its factorization.

19146919642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53261.

The product of its digits is 839808, while the sum is 52.

The spelling of 19146919642 in words is "nineteen billion, one hundred forty-six million, nine hundred nineteen thousand, six hundred forty-two".