820451373 has 8 divisors (see below), whose sum is σ = 1250211648. Its totient is φ = 468829344.

The previous prime is 820451371. The next prime is 820451417. The reversal of 820451373 is 373154028.

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

It is not a de Polignac number, because 820451373 - 2¹ = 820451371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820451371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19534536 + ... + 19534577.

It is an arithmetic number, because the mean of its divisors is an integer number (156276456).

Almost surely, 2^820451373 is an apocalyptic number.

It is an amenable number.

820451373 is a deficient number, since it is larger than the sum of its proper divisors (429760275).

820451373 is a wasteful number, since it uses less digits than its factorization.

820451373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39069123.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 820451373 is about 28643.5223567214. The cubic root of 820451373 is about 936.1618709289.

The spelling of 820451373 in words is "eight hundred twenty million, four hundred fifty-one thousand, three hundred seventy-three".