1780956066 has 16 divisors (see below), whose sum is σ = 3604827744. Its totient is φ = 586499424.

The previous prime is 1780956053. The next prime is 1780956077. The reversal of 1780956066 is 6606590871.

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, 1787611 + ... + 1788606.

It is an arithmetic number, because the mean of its divisors is an integer number (225301734).

Almost surely, 2^1780956066 is an apocalyptic number.

1780956066 is an abundant number, since it is smaller than the sum of its proper divisors (1823871678).

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

1780956066 is a wasteful number, since it uses less digits than its factorization.

1780956066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576305.

The product of its (nonzero) digits is 544320, while the sum is 48.

The square root of 1780956066 is about 42201.3751671672. The cubic root of 1780956066 is about 1212.1352153928.

The spelling of 1780956066 in words is "one billion, seven hundred eighty million, nine hundred fifty-six thousand, sixty-six".