1645117226 has 8 divisors (see below), whose sum is σ = 2475611424. Its totient is φ = 819913420.

The previous prime is 1645117211. The next prime is 1645117231. The reversal of 1645117226 is 6227115461.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321820 + ... + 1323063.

It is an arithmetic number, because the mean of its divisors is an integer number (309451428).

Almost surely, 2^1645117226 is an apocalyptic number.

1645117226 is a deficient number, since it is larger than the sum of its proper divisors (830494198).

1645117226 is a wasteful number, since it uses less digits than its factorization.

1645117226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2645196.

The product of its digits is 20160, while the sum is 35.

The square root of 1645117226 is about 40560.0446991864. The cubic root of 1645117226 is about 1180.4989812502.

The spelling of 1645117226 in words is "one billion, six hundred forty-five million, one hundred seventeen thousand, two hundred twenty-six".