151787491 has 2 divisors, whose sum is σ = 151787492. Its totient is φ = 151787490.

The previous prime is 151787483. The next prime is 151787497. The reversal of 151787491 is 194787151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 151787491 - 2³ = 151787483 is a prime.

It is not a weakly prime, because it can be changed into another prime (151787497) 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, 75893745 + 75893746.

It is an arithmetic number, because the mean of its divisors is an integer number (75893746).

Almost surely, 2^151787491 is an apocalyptic number.

151787491 is a deficient number, since it is larger than the sum of its proper divisors (1).

151787491 is an equidigital number, since it uses as much as digits as its factorization.

151787491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 43.

The square root of 151787491 is about 12320.2066135272. The cubic root of 151787491 is about 533.4315035000.

The spelling of 151787491 in words is "one hundred fifty-one million, seven hundred eighty-seven thousand, four hundred ninety-one".