1301201985 has 16 divisors (see below), whose sum is σ = 2191498560. Its totient is φ = 657449280.

The previous prime is 1301201971. The next prime is 1301201999. The reversal of 1301201985 is 5891021031.

It is an interprime number because it is at equal distance from previous prime (1301201971) and next prime (1301201999).

It is not a de Polignac number, because 1301201985 - 2⁸ = 1301201729 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2282526 + ... + 2283095.

It is an arithmetic number, because the mean of its divisors is an integer number (136968660).

Almost surely, 2^1301201985 is an apocalyptic number.

1301201985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1301201985 is a deficient number, since it is larger than the sum of its proper divisors (890296575).

1301201985 is a wasteful number, since it uses less digits than its factorization.

1301201985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4565648.

The product of its (nonzero) digits is 2160, while the sum is 30.

The square root of 1301201985 is about 36072.1774363567. The cubic root of 1301201985 is about 1091.7291481308.

The spelling of 1301201985 in words is "one billion, three hundred one million, two hundred one thousand, nine hundred eighty-five".