1890642533158 has 8 divisors (see below), whose sum is σ = 2836122083928. Its totient is φ = 945268505184.

The previous prime is 1890642533113. The next prime is 1890642533201. The reversal of 1890642533158 is 8513352460981.

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

It is a junction number, because it is equal to n+sod(n) for n = 1890642533099 and 1890642533108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26335891 + ... + 26407582.

It is an arithmetic number, because the mean of its divisors is an integer number (354515260491).

Almost surely, 2^{1890642533158} is an apocalyptic number.

1890642533158 is a deficient number, since it is larger than the sum of its proper divisors (945479550770).

1890642533158 is a wasteful number, since it uses less digits than its factorization.

1890642533158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52761398.

The product of its (nonzero) digits is 6220800, while the sum is 55.

The spelling of 1890642533158 in words is "one trillion, eight hundred ninety billion, six hundred forty-two million, five hundred thirty-three thousand, one hundred fifty-eight".