1890146159 has 4 divisors (see below), whose sum is σ = 2061977640. Its totient is φ = 1718314680.

The previous prime is 1890146143. The next prime is 1890146161. The reversal of 1890146159 is 9516410981.

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

It is a cyclic number.

It is not a de Polignac number, because 1890146159 - 2⁴ = 1890146143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890146189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85915724 + ... + 85915745.

It is an arithmetic number, because the mean of its divisors is an integer number (515494410).

Almost surely, 2^1890146159 is an apocalyptic number.

1890146159 is a deficient number, since it is larger than the sum of its proper divisors (171831481).

1890146159 is a wasteful number, since it uses less digits than its factorization.

1890146159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171831480.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 1890146159 is about 43475.8111942722. The cubic root of 1890146159 is about 1236.4174601760.

The spelling of 1890146159 in words is "one billion, eight hundred ninety million, one hundred forty-six thousand, one hundred fifty-nine".