1626872449 has 4 divisors (see below), whose sum is σ = 1664706736. Its totient is φ = 1589038164.

The previous prime is 1626872447. The next prime is 1626872483. The reversal of 1626872449 is 9442786261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1626872449 - 2¹ = 1626872447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1626872447) 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, 18917079 + ... + 18917164.

It is an arithmetic number, because the mean of its divisors is an integer number (416176684).

Almost surely, 2^1626872449 is an apocalyptic number.

It is an amenable number.

1626872449 is a deficient number, since it is larger than the sum of its proper divisors (37834287).

1626872449 is an equidigital number, since it uses as much as digits as its factorization.

1626872449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37834286.

The product of its digits is 1161216, while the sum is 49.

The square root of 1626872449 is about 40334.5069264519. The cubic root of 1626872449 is about 1176.1187350710.

The spelling of 1626872449 in words is "one billion, six hundred twenty-six million, eight hundred seventy-two thousand, four hundred forty-nine".