148185631 has 16 divisors (see below), whose sum is σ = 163731456. Its totient is φ = 133000000.

The previous prime is 148185607. The next prime is 148185637. The reversal of 148185631 is 136581841.

It is a cyclic number.

It is not a de Polignac number, because 148185631 - 2⁵ = 148185599 is a prime.

It is a super-2 number, since 2×148185631² = 43917962469736322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148185637) 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, 527211 + ... + 527491.

It is an arithmetic number, because the mean of its divisors is an integer number (10233216).

Almost surely, 2^148185631 is an apocalyptic number.

148185631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

148185631 is a deficient number, since it is larger than the sum of its proper divisors (15545825).

148185631 is a wasteful number, since it uses less digits than its factorization.

148185631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734.

The product of its digits is 23040, while the sum is 37.

The square root of 148185631 is about 12173.1520568832. The cubic root of 148185631 is about 529.1783054652.

It can be divided in two parts, 14818 and 5631, that added together give a square (20449 = 143²).

The spelling of 148185631 in words is "one hundred forty-eight million, one hundred eighty-five thousand, six hundred thirty-one".