148091987 has 2 divisors, whose sum is σ = 148091988. Its totient is φ = 148091986.

The previous prime is 148091953. The next prime is 148091989. The reversal of 148091987 is 789190841.

148091987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148091987 - 2¹⁰ = 148090963 is a prime.

It is a super-2 number, since 2×148091987² = 43862473227216338, which contains 22 as substring.

Together with 148091989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (148091989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74045993 + 74045994.

It is an arithmetic number, because the mean of its divisors is an integer number (74045994).

Almost surely, 2^148091987 is an apocalyptic number.

148091987 is a deficient number, since it is larger than the sum of its proper divisors (1).

148091987 is an equidigital number, since it uses as much as digits as its factorization.

148091987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 148091987 is about 12169.3051157410. The cubic root of 148091987 is about 529.0668128394.

The spelling of 148091987 in words is "one hundred forty-eight million, ninety-one thousand, nine hundred eighty-seven".