1920811226 has 4 divisors (see below), whose sum is σ = 2881216842. Its totient is φ = 960405612.

The previous prime is 1920811219. The next prime is 1920811271. The reversal of 1920811226 is 6221180291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6221180291 = 13441 ⋅462851.

It can be written as a sum of positive squares in only one way, i.e., 1014741025 + 906070201 = 31855^2 + 30101^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1920811192 and 1920811201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 480202805 + ... + 480202808.

Almost surely, 2^1920811226 is an apocalyptic number.

1920811226 is a deficient number, since it is larger than the sum of its proper divisors (960405616).

1920811226 is an equidigital number, since it uses as much as digits as its factorization.

1920811226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960405615.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1920811226 is about 43827.0604307430. The cubic root of 1920811226 is about 1243.0680241090.

The spelling of 1920811226 in words is "one billion, nine hundred twenty million, eight hundred eleven thousand, two hundred twenty-six".