1999826830 has 16 divisors (see below), whose sum is σ = 3660701040. Its totient is φ = 786372352.

The previous prime is 1999826813. The next prime is 1999826849. The reversal of 1999826830 is 386289991.

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, 1694179 + ... + 1695358.

It is an arithmetic number, because the mean of its divisors is an integer number (228793815).

Almost surely, 2^1999826830 is an apocalyptic number.

1999826830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1999826830 is a deficient number, since it is larger than the sum of its proper divisors (1660874210).

1999826830 is a wasteful number, since it uses less digits than its factorization.

1999826830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3389603.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 1999826830 is about 44719.4234086264. The cubic root of 1999826830 is about 1259.8846854239.

The spelling of 1999826830 in words is "one billion, nine hundred ninety-nine million, eight hundred twenty-six thousand, eight hundred thirty".