151915891 has 16 divisors (see below), whose sum is σ = 161533440. Its totient is φ = 142633120.

The previous prime is 151915873. The next prime is 151915909. The reversal of 151915891 is 198519151.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (151915873) and next prime (151915909).

It is a cyclic number.

It is not a de Polignac number, because 151915891 - 2⁷ = 151915763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151915831) 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 in 15 ways as a sum of consecutive naturals, for example, 309156 + ... + 309646.

It is an arithmetic number, because the mean of its divisors is an integer number (10095840).

Almost surely, 2^151915891 is an apocalyptic number.

151915891 is a deficient number, since it is larger than the sum of its proper divisors (9617549).

151915891 is a wasteful number, since it uses less digits than its factorization.

151915891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794.

The product of its digits is 16200, while the sum is 40.

The square root of 151915891 is about 12325.4164635521. The cubic root of 151915891 is about 533.5818744794.

The spelling of 151915891 in words is "one hundred fifty-one million, nine hundred fifteen thousand, eight hundred ninety-one".