1020403405194 has 16 divisors (see below), whose sum is σ = 2052081988320. Its totient is φ = 338255272080.

The previous prime is 1020403405181. The next prime is 1020403405243. The reversal of 1020403405194 is 4915043040201.

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, 469797904 + ... + 469800075.

It is an arithmetic number, because the mean of its divisors is an integer number (128255124270).

Almost surely, 2^{1020403405194} is an apocalyptic number.

1020403405194 is an abundant number, since it is smaller than the sum of its proper divisors (1031678583126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020403405194 is a wasteful number, since it uses less digits than its factorization.

1020403405194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939598165.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 1020403405194 its reverse (4915043040201), we get a palindrome (5935446445395).

The spelling of 1020403405194 in words is "one trillion, twenty billion, four hundred three million, four hundred five thousand, one hundred ninety-four".