1690716790 has 48 divisors (see below), whose sum is σ = 3520958112. Its totient is φ = 572548608.

The previous prime is 1690716787. The next prime is 1690716893. The reversal of 1690716790 is 976170961.

It is a super-4 number, since 4×1690716790⁴ (a number of 38 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1690716790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3387961 + ... + 3388459.

It is an arithmetic number, because the mean of its divisors is an integer number (73353294).

Almost surely, 2^1690716790 is an apocalyptic number.

1690716790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1690716790 is an abundant number, since it is smaller than the sum of its proper divisors (1830241322).

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

1690716790 is an frugal number, since it uses more digits than its factorization.

1690716790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1109 (or 610 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 46.

The square root of 1690716790 is about 41118.3266926075. The cubic root of 1690716790 is about 1191.3068029936.

The spelling of 1690716790 in words is "one billion, six hundred ninety million, seven hundred sixteen thousand, seven hundred ninety".