1026191039894 has 4 divisors (see below), whose sum is σ = 1539286559844. Its totient is φ = 513095519946.

The previous prime is 1026191039833. The next prime is 1026191039897. The reversal of 1026191039894 is 4989301916201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026191039897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256547759972 + ... + 256547759975.

It is an arithmetic number, because the mean of its divisors is an integer number (384821639961).

Almost surely, 2^{1026191039894} is an apocalyptic number.

1026191039894 is a deficient number, since it is larger than the sum of its proper divisors (513095519950).

1026191039894 is an equidigital number, since it uses as much as digits as its factorization.

1026191039894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513095519949.

The product of its (nonzero) digits is 839808, while the sum is 53.

The spelling of 1026191039894 in words is "one trillion, twenty-six billion, one hundred ninety-one million, thirty-nine thousand, eight hundred ninety-four".