151680385 has 4 divisors (see below), whose sum is σ = 182016468. Its totient is φ = 121344304.

The previous prime is 151680383. The next prime is 151680391. The reversal of 151680385 is 583086151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 115089984 + 36590401 = 10728^2 + 6049^2 .

It is a cyclic number.

It is not a de Polignac number, because 151680385 - 2¹ = 151680383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151680383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15168034 + ... + 15168043.

It is an arithmetic number, because the mean of its divisors is an integer number (45504117).

Almost surely, 2^151680385 is an apocalyptic number.

It is an amenable number.

151680385 is a deficient number, since it is larger than the sum of its proper divisors (30336083).

151680385 is an equidigital number, since it uses as much as digits as its factorization.

151680385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30336082.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 151680385 is about 12315.8590849360. The cubic root of 151680385 is about 533.3060053272.

The spelling of 151680385 in words is "one hundred fifty-one million, six hundred eighty thousand, three hundred eighty-five".