1916982730 has 32 divisors (see below), whose sum is σ = 3934589904. Its totient is φ = 666172416.

The previous prime is 1916982709. The next prime is 1916982731. The reversal of 1916982730 is 372896191.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 969512769 + 947469961 = 31137^2 + 30781^2 .

It is not an unprimeable number, because it can be changed into a prime (1916982731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 431497 + ... + 435916.

Almost surely, 2^1916982730 is an apocalyptic number.

1916982730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916982730 is an abundant number, since it is smaller than the sum of its proper divisors (2017607174).

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

1916982730 is a wasteful number, since it uses less digits than its factorization.

1916982730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867450.

The product of its (nonzero) digits is 163296, while the sum is 46.

The square root of 1916982730 is about 43783.3613373848. The cubic root of 1916982730 is about 1242.2415944076.

The spelling of 1916982730 in words is "one billion, nine hundred sixteen million, nine hundred eighty-two thousand, seven hundred thirty".