1872272478 has 16 divisors (see below), whose sum is σ = 3749398416. Its totient is φ = 623281920.

The previous prime is 1872272477. The next prime is 1872272513. The reversal of 1872272478 is 8742722781.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872272471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197203 + ... + 206478.

It is an arithmetic number, because the mean of its divisors is an integer number (234337401).

Almost surely, 2^1872272478 is an apocalyptic number.

1872272478 is an abundant number, since it is smaller than the sum of its proper divisors (1877125938).

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

1872272478 is a wasteful number, since it uses less digits than its factorization.

1872272478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404459.

The product of its digits is 702464, while the sum is 48.

The square root of 1872272478 is about 43269.7640159962. The cubic root of 1872272478 is about 1232.5078227625.

The spelling of 1872272478 in words is "one billion, eight hundred seventy-two million, two hundred seventy-two thousand, four hundred seventy-eight".