1220746965 has 32 divisors (see below), whose sum is σ = 2158016256. Its totient is φ = 586122240.

The previous prime is 1220746951. The next prime is 1220746973. The reversal of 1220746965 is 5696470221.

1220746965 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1220746965 - 2¹² = 1220742869 is a prime.

It is a super-2 number, since 2×1220746965² = 2980446305113422450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 98206 + ... + 109935.

It is an arithmetic number, because the mean of its divisors is an integer number (67438008).

Almost surely, 2^1220746965 is an apocalyptic number.

1220746965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1220746965 is a deficient number, since it is larger than the sum of its proper divisors (937269291).

1220746965 is a wasteful number, since it uses less digits than its factorization.

1220746965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208189.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 1220746965 is about 34939.1895298102. The cubic root of 1220746965 is about 1068.7477606054.

The spelling of 1220746965 in words is "one billion, two hundred twenty million, seven hundred forty-six thousand, nine hundred sixty-five".