1872449449 has 8 divisors (see below), whose sum is σ = 2122615040. Its totient is φ = 1637445456.

The previous prime is 1872449443. The next prime is 1872449461. The reversal of 1872449449 is 9449442781.

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

It is a cyclic number.

It is not a de Polignac number, because 1872449449 - 2⁹ = 1872448937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1872449396 and 1872449405.

It is not an unprimeable number, because it can be changed into a prime (1872449443) 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, 3790137 + ... + 3790630.

It is an arithmetic number, because the mean of its divisors is an integer number (265326880).

Almost surely, 2^1872449449 is an apocalyptic number.

1872449449 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1872449449 is a deficient number, since it is larger than the sum of its proper divisors (250165591).

1872449449 is a wasteful number, since it uses less digits than its factorization.

1872449449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580799.

The product of its digits is 2322432, while the sum is 52.

The square root of 1872449449 is about 43271.8089406949. The cubic root of 1872449449 is about 1232.5466545872.

The spelling of 1872449449 in words is "one billion, eight hundred seventy-two million, four hundred forty-nine thousand, four hundred forty-nine".