19298478707 has 4 divisors (see below), whose sum is σ = 19963943520. Its totient is φ = 18633013896.

The previous prime is 19298478607. The next prime is 19298478743. The reversal of 19298478707 is 70787489291.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19298478707 - 2²² = 19294284403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19298478707.

It is not an unprimeable number, because it can be changed into a prime (19298478607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332732363 + ... + 332732420.

It is an arithmetic number, because the mean of its divisors is an integer number (4990985880).

Almost surely, 2^19298478707 is an apocalyptic number.

19298478707 is a deficient number, since it is larger than the sum of its proper divisors (665464813).

19298478707 is an equidigital number, since it uses as much as digits as its factorization.

19298478707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665464812.

The product of its (nonzero) digits is 14224896, while the sum is 62.

The spelling of 19298478707 in words is "nineteen billion, two hundred ninety-eight million, four hundred seventy-eight thousand, seven hundred seven".