148678631 has 2 divisors, whose sum is σ = 148678632. Its totient is φ = 148678630.

The previous prime is 148678627. The next prime is 148678633. The reversal of 148678631 is 136876841.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 148678631 - 2² = 148678627 is a prime.

It is a super-2 number, since 2×148678631² = 44210670632068322, which contains 22 as substring.

Together with 148678633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (148678633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74339315 + 74339316.

It is an arithmetic number, because the mean of its divisors is an integer number (74339316).

Almost surely, 2^148678631 is an apocalyptic number.

148678631 is a deficient number, since it is larger than the sum of its proper divisors (1).

148678631 is an equidigital number, since it uses as much as digits as its factorization.

148678631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 44.

The square root of 148678631 is about 12193.3847228733. The cubic root of 148678631 is about 529.7644984337.

The spelling of 148678631 in words is "one hundred forty-eight million, six hundred seventy-eight thousand, six hundred thirty-one".