1683702690 has 32 divisors (see below), whose sum is σ = 4171239936. Its totient is φ = 434503680.

The previous prime is 1683702571. The next prime is 1683702701. The reversal of 1683702690 is 962073861.

It is a happy number.

It is a super-2 number, since 2×1683702690² = 5669709496626472200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904287 + ... + 906146.

It is an arithmetic number, because the mean of its divisors is an integer number (130351248).

Almost surely, 2^1683702690 is an apocalyptic number.

1683702690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1683702690 is an abundant number, since it is smaller than the sum of its proper divisors (2487537246).

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

1683702690 is a wasteful number, since it uses less digits than its factorization.

1683702690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1810474.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1683702690 is about 41032.9463967676. The cubic root of 1683702690 is about 1189.6571029083.

The spelling of 1683702690 in words is "one billion, six hundred eighty-three million, seven hundred two thousand, six hundred ninety".