1690486912 has 16 divisors (see below), whose sum is σ = 3367767150. Its totient is φ = 845243392.

The previous prime is 1690486909. The next prime is 1690486999. The reversal of 1690486912 is 2196840961.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1608330816 + 82156096 = 40104^2 + 9064^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6603337 + ... + 6603592.

Almost surely, 2^1690486912 is an apocalyptic number.

It is an amenable number.

1690486912 is a deficient number, since it is larger than the sum of its proper divisors (1677280238).

1690486912 is an equidigital number, since it uses as much as digits as its factorization.

1690486912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13206943 (or 13206931 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 1690486912 is about 41115.5312746899. The cubic root of 1690486912 is about 1191.2528086090.

The spelling of 1690486912 in words is "one billion, six hundred ninety million, four hundred eighty-six thousand, nine hundred twelve".