1971826718054 has 4 divisors (see below), whose sum is σ = 2957740077084. Its totient is φ = 985913359026.

The previous prime is 1971826718021. The next prime is 1971826718117. The reversal of 1971826718054 is 4508176281791.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1971826717984 and 1971826718002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492956679512 + ... + 492956679515.

It is an arithmetic number, because the mean of its divisors is an integer number (739435019271).

Almost surely, 2^{1971826718054} is an apocalyptic number.

1971826718054 is a deficient number, since it is larger than the sum of its proper divisors (985913359030).

1971826718054 is an equidigital number, since it uses as much as digits as its factorization.

1971826718054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985913359029.

The product of its (nonzero) digits is 6773760, while the sum is 59.

The spelling of 1971826718054 in words is "one trillion, nine hundred seventy-one billion, eight hundred twenty-six million, seven hundred eighteen thousand, fifty-four".