1672672426 has 4 divisors (see below), whose sum is σ = 2509008642. Its totient is φ = 836336212.

The previous prime is 1672672403. The next prime is 1672672459. The reversal of 1672672426 is 6242762761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6242762761 = 1549 ⋅4030189.

It can be written as a sum of positive squares in only one way, i.e., 1334075625 + 338596801 = 36525^2 + 18401^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418168105 + ... + 418168108.

Almost surely, 2^1672672426 is an apocalyptic number.

1672672426 is a deficient number, since it is larger than the sum of its proper divisors (836336216).

1672672426 is an equidigital number, since it uses as much as digits as its factorization.

1672672426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836336215.

The product of its digits is 338688, while the sum is 43.

The square root of 1672672426 is about 40898.3181316787. The cubic root of 1672672426 is about 1187.0535173357.

The spelling of 1672672426 in words is "one billion, six hundred seventy-two million, six hundred seventy-two thousand, four hundred twenty-six".