1645022150 has 24 divisors (see below), whose sum is σ = 3101662344. Its totient is φ = 648993600.

The previous prime is 1645022149. The next prime is 1645022177. The reversal of 1645022150 is 512205461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 221696 + ... + 228995.

It is an arithmetic number, because the mean of its divisors is an integer number (129235931).

Almost surely, 2^1645022150 is an apocalyptic number.

1645022150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645022150 is a deficient number, since it is larger than the sum of its proper divisors (1456640194).

1645022150 is a wasteful number, since it uses less digits than its factorization.

1645022150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450776 (or 450771 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1645022150 is about 40558.8726421236. The cubic root of 1645022150 is about 1180.4762393484.

The spelling of 1645022150 in words is "one billion, six hundred forty-five million, twenty-two thousand, one hundred fifty".