1641465226 has 64 divisors (see below), whose sum is σ = 2744422560. Its totient is φ = 733224960.

The previous prime is 1641465223. The next prime is 1641465229. The reversal of 1641465226 is 6225641461.

It is a Cunningham number, because it is equal to 40515²+1.

It is an interprime number because it is at equal distance from previous prime (1641465223) and next prime (1641465229).

It can be written as a sum of positive squares in 16 ways, for example, as 374461201 + 1267004025 = 19351^2 + 35595^2 .

It is not an unprimeable number, because it can be changed into a prime (1641465223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11981430 + ... + 11981566.

Almost surely, 2^1641465226 is an apocalyptic number.

1641465226 is a deficient number, since it is larger than the sum of its proper divisors (1102957334).

1641465226 is a wasteful number, since it uses less digits than its factorization.

1641465226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379.

The product of its digits is 69120, while the sum is 37.

The square root of 1641465226 is about 40515.0000123411. Note that the first 4 decimals coincide. The cubic root of 1641465226 is about 1179.6248031498.

The spelling of 1641465226 in words is "one billion, six hundred forty-one million, four hundred sixty-five thousand, two hundred twenty-six".