1201946885 has 8 divisors (see below), whose sum is σ = 1457206296. Its totient is φ = 951644160.

The previous prime is 1201946833. The next prime is 1201946909. The reversal of 1201946885 is 5886491021.

It can be written as a sum of positive squares in 4 ways, for example, as 172948801 + 1028998084 = 13151^2 + 32078^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1201946885 - 2²² = 1197752581 is a prime.

It is a super-2 number, since 2×1201946885² = 2889352628722406450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1238636 + ... + 1239605.

It is an arithmetic number, because the mean of its divisors is an integer number (182150787).

Almost surely, 2^1201946885 is an apocalyptic number.

It is an amenable number.

1201946885 is a deficient number, since it is larger than the sum of its proper divisors (255259411).

1201946885 is an equidigital number, since it uses as much as digits as its factorization.

1201946885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2478343.

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1201946885 is about 34669.1056273449. The cubic root of 1201946885 is about 1063.2329459009.

The spelling of 1201946885 in words is "one billion, two hundred one million, nine hundred forty-six thousand, eight hundred eighty-five".