1690362368 has 90 divisors (see below), whose sum is σ = 3575909799. Its totient is φ = 798200832.

The previous prime is 1690362347. The next prime is 1690362407. The reversal of 1690362368 is 8632630961.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 845181184 + 845181184 = 29072^2 + 29072^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=29072.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 21396953 + ... + 21397031.

Almost surely, 2^1690362368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1690362368

1690362368 is an abundant number, since it is smaller than the sum of its proper divisors (1885547431).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1690362368 is an frugal number, since it uses more digits than its factorization.

1690362368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 44.

The square root of 1690362368 is about 41114.0166853106. The cubic root of 1690362368 is about 1191.2235533232.

The spelling of 1690362368 in words is "one billion, six hundred ninety million, three hundred sixty-two thousand, three hundred sixty-eight".