148639863 has 16 divisors (see below), whose sum is σ = 204068480. Its totient is φ = 96181344.

The previous prime is 148639847. The next prime is 148639889. The reversal of 148639863 is 368936841.

It is not a de Polignac number, because 148639863 - 2⁴ = 148639847 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 (148639663) 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, 17493 + ... + 24561.

It is an arithmetic number, because the mean of its divisors is an integer number (12754280).

Almost surely, 2^148639863 is an apocalyptic number.

148639863 is a deficient number, since it is larger than the sum of its proper divisors (55428617).

148639863 is a wasteful number, since it uses less digits than its factorization.

148639863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7278.

The product of its digits is 746496, while the sum is 48.

The square root of 148639863 is about 12191.7949047710. The cubic root of 148639863 is about 529.7184490109.

The spelling of 148639863 in words is "one hundred forty-eight million, six hundred thirty-nine thousand, eight hundred sixty-three".