1690117500 has 60 divisors (see below), whose sum is σ = 4927953800. Its totient is φ = 450696000.

The previous prime is 1690117483. The next prime is 1690117519. The reversal of 1690117500 is 57110961.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 105175 + ... + 120174.

Almost surely, 2^1690117500 is an apocalyptic number.

1690117500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1690117500 is an abundant number, since it is smaller than the sum of its proper divisors (3237836300).

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

1690117500 is a wasteful number, since it uses less digits than its factorization.

1690117500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225376 (or 225359 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 30.

The square root of 1690117500 is about 41111.0386635998. The cubic root of 1690117500 is about 1191.1660298358.

The spelling of 1690117500 in words is "one billion, six hundred ninety million, one hundred seventeen thousand, five hundred".