1890006669 has 16 divisors (see below), whose sum is σ = 2921750400. Its totient is φ = 1205221248.

The previous prime is 1890006619. The next prime is 1890006673. The reversal of 1890006669 is 9666000981.

1890006669 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1890006669 - 2¹⁵ = 1889973901 is a prime.

It is a super-2 number, since 2×1890006669² = 7144250417728951122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890006619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1521124 + ... + 1522365.

It is an arithmetic number, because the mean of its divisors is an integer number (182609400).

Almost surely, 2^1890006669 is an apocalyptic number.

It is an amenable number.

1890006669 is a deficient number, since it is larger than the sum of its proper divisors (1031743731).

1890006669 is a wasteful number, since it uses less digits than its factorization.

1890006669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043521 (or 3043515 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1890006669 is about 43474.2069392876. The cubic root of 1890006669 is about 1236.3870441658.

The spelling of 1890006669 in words is "one billion, eight hundred ninety million, six thousand, six hundred sixty-nine".