19690010494 has 32 divisors (see below), whose sum is σ = 36942909696. Its totient is φ = 7646425920.

The previous prime is 19690010489. The next prime is 19690010513. The reversal of 19690010494 is 49401009691.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19690010494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160959 + ... + 255514.

It is an arithmetic number, because the mean of its divisors is an integer number (1154465928).

Almost surely, 2^19690010494 is an apocalyptic number.

19690010494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19690010494 is a deficient number, since it is larger than the sum of its proper divisors (17252899202).

19690010494 is a wasteful number, since it uses less digits than its factorization.

19690010494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416800.

The product of its (nonzero) digits is 69984, while the sum is 43.

The spelling of 19690010494 in words is "nineteen billion, six hundred ninety million, ten thousand, four hundred ninety-four".