1690652189 has 8 divisors (see below), whose sum is σ = 1700993088. Its totient is φ = 1680337120.

The previous prime is 1690652147. The next prime is 1690652233. The reversal of 1690652189 is 9812560961.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1690652189 - 2¹² = 1690648093 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 (1690252189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134024 + ... + 146094.

It is an arithmetic number, because the mean of its divisors is an integer number (212624136).

Almost surely, 2^1690652189 is an apocalyptic number.

It is an amenable number.

1690652189 is a deficient number, since it is larger than the sum of its proper divisors (10340899).

1690652189 is a wasteful number, since it uses less digits than its factorization.

1690652189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 1690652189 is about 41117.5411351409. The cubic root of 1690652189 is about 1191.2916298253.

The spelling of 1690652189 in words is "one billion, six hundred ninety million, six hundred fifty-two thousand, one hundred eighty-nine".