1081973216 has 12 divisors (see below), whose sum is σ = 2130134832. Its totient is φ = 540986592.

The previous prime is 1081973201. The next prime is 1081973261. The reversal of 1081973216 is 6123791801.

It is a self number, because there is not a number n which added to its sum of digits gives 1081973216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16905800 + ... + 16905863.

It is an arithmetic number, because the mean of its divisors is an integer number (177511236).

Almost surely, 2^1081973216 is an apocalyptic number.

1081973216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1081973216 is a deficient number, since it is larger than the sum of its proper divisors (1048161616).

1081973216 is an equidigital number, since it uses as much as digits as its factorization.

1081973216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33811673 (or 33811665 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1081973216 is about 32893.3612754914. The cubic root of 1081973216 is about 1026.6100307957.

The spelling of 1081973216 in words is "one billion, eighty-one million, nine hundred seventy-three thousand, two hundred sixteen".