1681030190 has 16 divisors (see below), whose sum is σ = 3458119392. Its totient is φ = 576353184.

The previous prime is 1681030133. The next prime is 1681030207. The reversal of 1681030190 is 910301861.

It is a happy number.

It is a super-2 number, since 2×1681030190² = 5651724999382872200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12007289 + ... + 12007428.

It is an arithmetic number, because the mean of its divisors is an integer number (216132462).

Almost surely, 2^1681030190 is an apocalyptic number.

1681030190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1681030190 is an abundant number, since it is smaller than the sum of its proper divisors (1777089202).

1681030190 is a wasteful number, since it uses less digits than its factorization.

1681030190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24014731.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1681030190 is about 41000.3681690787. The cubic root of 1681030190 is about 1189.0273317331.

The spelling of 1681030190 in words is "one billion, six hundred eighty-one million, thirty thousand, one hundred ninety".