1916549770 has 16 divisors (see below), whose sum is σ = 3453694848. Its totient is φ = 765752080.

The previous prime is 1916549749. The next prime is 1916549809. The reversal of 1916549770 is 779456191.

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, 99166 + ... + 116905.

It is an arithmetic number, because the mean of its divisors is an integer number (215855928).

Almost surely, 2^1916549770 is an apocalyptic number.

1916549770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1916549770 is a deficient number, since it is larger than the sum of its proper divisors (1537145078).

1916549770 is a wasteful number, since it uses less digits than its factorization.

1916549770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216965.

The product of its (nonzero) digits is 476280, while the sum is 49.

The square root of 1916549770 is about 43778.4167141755. The cubic root of 1916549770 is about 1242.1480652365.

The spelling of 1916549770 in words is "one billion, nine hundred sixteen million, five hundred forty-nine thousand, seven hundred seventy".