1690272923 has 16 divisors (see below), whose sum is σ = 1849860864. Its totient is φ = 1537505280.

The previous prime is 1690272911. The next prime is 1690272937. The reversal of 1690272923 is 3292720961.

It is a cyclic number.

It is not a de Polignac number, because 1690272923 - 2¹⁰ = 1690271899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1690272953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 523811 + ... + 527027.

It is an arithmetic number, because the mean of its divisors is an integer number (115616304).

Almost surely, 2^1690272923 is an apocalyptic number.

1690272923 is a deficient number, since it is larger than the sum of its proper divisors (159587941).

1690272923 is a wasteful number, since it uses less digits than its factorization.

1690272923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4262.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 1690272923 is about 41112.9289032051. The cubic root of 1690272923 is about 1191.2025418777.

The spelling of 1690272923 in words is "one billion, six hundred ninety million, two hundred seventy-two thousand, nine hundred twenty-three".