193778020814 has 28 divisors (see below), whose sum is σ = 339111536424. Its totient is φ = 83047723206.

The previous prime is 193778020789. The next prime is 193778020841. The reversal of 193778020814 is 418020877391.

It is a happy number.

It is a nialpdrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 27682574399 + ... + 27682574405.

Almost surely, 2^193778020814 is an apocalyptic number.

193778020814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

193778020814 is a deficient number, since it is larger than the sum of its proper divisors (145333515610).

193778020814 is an frugal number, since it uses more digits than its factorization.

193778020814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 9 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 50.

The spelling of 193778020814 in words is "one hundred ninety-three billion, seven hundred seventy-eight million, twenty thousand, eight hundred fourteen".