151791899 has 4 divisors (see below), whose sum is σ = 173476464. Its totient is φ = 130107336.

The previous prime is 151791889. The next prime is 151791901. The reversal of 151791899 is 998197151.

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

It is a cyclic number.

It is not a de Polignac number, because 151791899 - 2⁸ = 151791643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151791869) 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, 10842272 + ... + 10842285.

It is an arithmetic number, because the mean of its divisors is an integer number (43369116).

Almost surely, 2^151791899 is an apocalyptic number.

151791899 is a deficient number, since it is larger than the sum of its proper divisors (21684565).

151791899 is an equidigital number, since it uses as much as digits as its factorization.

151791899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21684564.

The product of its digits is 204120, while the sum is 50.

The square root of 151791899 is about 12320.3855053322. The cubic root of 151791899 is about 533.4366671739.

The spelling of 151791899 in words is "one hundred fifty-one million, seven hundred ninety-one thousand, eight hundred ninety-nine".