1820091916 has 6 divisors (see below), whose sum is σ = 3185160860. Its totient is φ = 910045956.

The previous prime is 1820091863. The next prime is 1820091941. The reversal of 1820091916 is 6191900281.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227511486 + ... + 227511493.

Almost surely, 2^1820091916 is an apocalyptic number.

It is an amenable number.

1820091916 is a deficient number, since it is larger than the sum of its proper divisors (1365068944).

1820091916 is a wasteful number, since it uses less digits than its factorization.

1820091916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455022983 (or 455022981 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 37.

The square root of 1820091916 is about 42662.5352739380. The cubic root of 1820091916 is about 1220.9497030498.

The spelling of 1820091916 in words is "one billion, eight hundred twenty million, ninety-one thousand, nine hundred sixteen".