151680391 has 2 divisors, whose sum is σ = 151680392. Its totient is φ = 151680390.

The previous prime is 151680383. The next prime is 151680407. The reversal of 151680391 is 193086151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 151680391 - 2³ = 151680383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (151680301) 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 as a sum of consecutive naturals, namely, 75840195 + 75840196.

It is an arithmetic number, because the mean of its divisors is an integer number (75840196).

Almost surely, 2^151680391 is an apocalyptic number.

151680391 is a deficient number, since it is larger than the sum of its proper divisors (1).

151680391 is an equidigital number, since it uses as much as digits as its factorization.

151680391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 151680391 is about 12315.8593285243. The cubic root of 151680391 is about 533.3060123591.

The spelling of 151680391 in words is "one hundred fifty-one million, six hundred eighty thousand, three hundred ninety-one".