151816897 has 4 divisors (see below), whose sum is σ = 159807280. Its totient is φ = 143826516.

The previous prime is 151816879. The next prime is 151816913. The reversal of 151816897 is 798618151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-151816897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151816867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3995163 + ... + 3995200.

It is an arithmetic number, because the mean of its divisors is an integer number (39951820).

Almost surely, 2^151816897 is an apocalyptic number.

It is an amenable number.

151816897 is a deficient number, since it is larger than the sum of its proper divisors (7990383).

151816897 is an equidigital number, since it uses as much as digits as its factorization.

151816897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7990382.

The product of its digits is 120960, while the sum is 46.

The square root of 151816897 is about 12321.3999610434. The cubic root of 151816897 is about 533.4659487494.

The spelling of 151816897 in words is "one hundred fifty-one million, eight hundred sixteen thousand, eight hundred ninety-seven".