151663791 has 4 divisors (see below), whose sum is σ = 202218392. Its totient is φ = 101109192.

The previous prime is 151663789. The next prime is 151663801. The reversal of 151663791 is 197366151.

It is a happy number.

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

It is not a de Polignac number, because 151663791 - 2¹ = 151663789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151663091) 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 3 ways as a sum of consecutive naturals, for example, 25277296 + ... + 25277301.

It is an arithmetic number, because the mean of its divisors is an integer number (50554598).

Almost surely, 2^151663791 is an apocalyptic number.

151663791 is a deficient number, since it is larger than the sum of its proper divisors (50554601).

151663791 is an equidigital number, since it uses as much as digits as its factorization.

151663791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50554600.

The product of its digits is 34020, while the sum is 39.

The square root of 151663791 is about 12315.1853822831. The cubic root of 151663791 is about 533.2865565312.

The spelling of 151663791 in words is "one hundred fifty-one million, six hundred sixty-three thousand, seven hundred ninety-one".