1272880194 has 8 divisors (see below), whose sum is σ = 2545760400. Its totient is φ = 424293396.

The previous prime is 1272880183. The next prime is 1272880199. The reversal of 1272880194 is 4910882721.

1272880194 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

1272880194 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1272880199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106073344 + ... + 106073355.

It is an arithmetic number, because the mean of its divisors is an integer number (318220050).

Almost surely, 2^1272880194 is an apocalyptic number.

1272880194 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272880194 is a wasteful number, since it uses less digits than its factorization.

1272880194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212146704.

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1272880194 is about 35677.4465734307. The cubic root of 1272880194 is about 1083.7501642567.

The spelling of 1272880194 in words is "one billion, two hundred seventy-two million, eight hundred eighty thousand, one hundred ninety-four".