1890661146 has 16 divisors (see below), whose sum is σ = 4125079008. Its totient is φ = 572927600.

The previous prime is 1890661127. The next prime is 1890661153. The reversal of 1890661146 is 6411660981.

It is a junction number, because it is equal to n+sod(n) for n = 1890661098 and 1890661107.

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, 14323125 + ... + 14323256.

It is an arithmetic number, because the mean of its divisors is an integer number (257817438).

Almost surely, 2^1890661146 is an apocalyptic number.

1890661146 is an abundant number, since it is smaller than the sum of its proper divisors (2234417862).

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

1890661146 is a wasteful number, since it uses less digits than its factorization.

1890661146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28646397.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1890661146 is about 43481.7334751042. The cubic root of 1890661146 is about 1236.5297409284.

The spelling of 1890661146 in words is "one billion, eight hundred ninety million, six hundred sixty-one thousand, one hundred forty-six".