820150387 has 10 divisors (see below), whose sum is σ = 956787988. Its totient is φ = 702983988.

The previous prime is 820150381. The next prime is 820150391. The reversal of 820150387 is 783051028.

It is not a de Polignac number, because 820150387 - 2¹⁵ = 820117619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (820150381) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 168393 + ... + 173194.

Almost surely, 2^820150387 is an apocalyptic number.

820150387 is a deficient number, since it is larger than the sum of its proper divisors (136637601).

820150387 is an frugal number, since it uses more digits than its factorization.

820150387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341615 (or 341594 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 820150387 is about 28638.2678770906. The cubic root of 820150387 is about 936.0473786346.

The spelling of 820150387 in words is "eight hundred twenty million, one hundred fifty thousand, three hundred eighty-seven".