19828401770 has 8 divisors (see below), whose sum is σ = 35691123204. Its totient is φ = 7931360704.

The previous prime is 19828401763. The next prime is 19828401779. The reversal of 19828401770 is 7710482891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18515861329 + 1312540441 = 136073^2 + 36229^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (19828401779) 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, 991420079 + ... + 991420098.

Almost surely, 2^19828401770 is an apocalyptic number.

19828401770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19828401770 is a deficient number, since it is larger than the sum of its proper divisors (15862721434).

19828401770 is a wasteful number, since it uses less digits than its factorization.

19828401770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1982840184.

The product of its (nonzero) digits is 225792, while the sum is 47.

The spelling of 19828401770 in words is "nineteen billion, eight hundred twenty-eight million, four hundred one thousand, seven hundred seventy".