1201980735 has 16 divisors (see below), whose sum is σ = 2136854880. Its totient is φ = 641056320.

The previous prime is 1201980727. The next prime is 1201980739. The reversal of 1201980735 is 5370891021.

It is not a de Polignac number, because 1201980735 - 2³ = 1201980727 is a prime.

It is a super-2 number, since 2×1201980735² = 2889515374622280450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1201980735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201980739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4451646 + ... + 4451915.

It is an arithmetic number, because the mean of its divisors is an integer number (133553430).

Almost surely, 2^1201980735 is an apocalyptic number.

1201980735 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1201980735 is a deficient number, since it is larger than the sum of its proper divisors (934874145).

1201980735 is an equidigital number, since it uses as much as digits as its factorization.

1201980735 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8903575 (or 8903569 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1201980735 is about 34669.5938107155. The cubic root of 1201980735 is about 1063.2429269569.

The spelling of 1201980735 in words is "one billion, two hundred one million, nine hundred eighty thousand, seven hundred thirty-five".