151820891 has 2 divisors, whose sum is σ = 151820892. Its totient is φ = 151820890.

The previous prime is 151820843. The next prime is 151820939. The reversal of 151820891 is 198028151.

It is a balanced prime because it is at equal distance from previous prime (151820843) and next prime (151820939).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151820891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (151810891) 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, 75910445 + 75910446.

It is an arithmetic number, because the mean of its divisors is an integer number (75910446).

Almost surely, 2^151820891 is an apocalyptic number.

151820891 is a deficient number, since it is larger than the sum of its proper divisors (1).

151820891 is an equidigital number, since it uses as much as digits as its factorization.

151820891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 35.

The square root of 151820891 is about 12321.5620357161. The cubic root of 151820891 is about 533.4706268503.

The spelling of 151820891 in words is "one hundred fifty-one million, eight hundred twenty thousand, eight hundred ninety-one".