845906451 has 16 divisors (see below), whose sum is σ = 1286085024. Its totient is φ = 489936384.

The previous prime is 845906441. The next prime is 845906461. The reversal of 845906451 is 154609548.

It is an interprime number because it is at equal distance from previous prime (845906441) and next prime (845906461).

It is not a de Polignac number, because 845906451 - 2⁵ = 845906419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (845906441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 637276 + ... + 638601.

It is an arithmetic number, because the mean of its divisors is an integer number (80380314).

Almost surely, 2^845906451 is an apocalyptic number.

845906451 is a deficient number, since it is larger than the sum of its proper divisors (440178573).

845906451 is a wasteful number, since it uses less digits than its factorization.

845906451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275910.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 845906451 is about 29084.4709596032. The cubic root of 845906451 is about 945.7451271626.

The spelling of 845906451 in words is "eight hundred forty-five million, nine hundred six thousand, four hundred fifty-one".