1220934975 has 48 divisors (see below), whose sum is σ = 2178527232. Its totient is φ = 599794560.

The previous prime is 1220934971. The next prime is 1220934983. The reversal of 1220934975 is 5794390221.

It is not a de Polignac number, because 1220934975 - 2² = 1220934971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220934971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 590794 + ... + 592856.

It is an arithmetic number, because the mean of its divisors is an integer number (45385984).

Almost surely, 2^1220934975 is an apocalyptic number.

1220934975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220934975 is a deficient number, since it is larger than the sum of its proper divisors (957592257).

1220934975 is a wasteful number, since it uses less digits than its factorization.

1220934975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696 (or 2691 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 1220934975 is about 34941.8799580103. The cubic root of 1220934975 is about 1068.8026245419.

The spelling of 1220934975 in words is "one billion, two hundred twenty million, nine hundred thirty-four thousand, nine hundred seventy-five".