1690266044 has 48 divisors (see below), whose sum is σ = 3238341120. Its totient is φ = 769433280.

The previous prime is 1690266037. The next prime is 1690266047. The reversal of 1690266044 is 4406620961.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1690265989 and 1690266007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690266047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184967 + ... + 193889.

It is an arithmetic number, because the mean of its divisors is an integer number (67465440).

Almost surely, 2^1690266044 is an apocalyptic number.

It is an amenable number.

1690266044 is a deficient number, since it is larger than the sum of its proper divisors (1548075076).

1690266044 is a wasteful number, since it uses less digits than its factorization.

1690266044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9050 (or 9048 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1690266044 is about 41112.8452433056. The cubic root of 1690266044 is about 1191.2009259072.

The spelling of 1690266044 in words is "one billion, six hundred ninety million, two hundred sixty-six thousand, forty-four".