1016211986 has 4 divisors (see below), whose sum is σ = 1524317982. Its totient is φ = 508105992.

The previous prime is 1016211923. The next prime is 1016212033. The reversal of 1016211986 is 6891126101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 792141025 + 224070961 = 28145^2 + 14969^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254052995 + ... + 254052998.

Almost surely, 2^1016211986 is an apocalyptic number.

1016211986 is a deficient number, since it is larger than the sum of its proper divisors (508105996).

1016211986 is an equidigital number, since it uses as much as digits as its factorization.

1016211986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508105995.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1016211986 is about 31878.0800237405. The cubic root of 1016211986 is about 1005.3750523813.

The spelling of 1016211986 in words is "one billion, sixteen million, two hundred eleven thousand, nine hundred eighty-six".