148381643 has 4 divisors (see below), whose sum is σ = 148429008. Its totient is φ = 148334280.

The previous prime is 148381633. The next prime is 148381669. The reversal of 148381643 is 346183841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148381643 - 2²² = 144187339 is a prime.

It is a super-2 number, since 2×148381643² = 44034223958758898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148381597 and 148381606.

It is not an unprimeable number, because it can be changed into a prime (148381613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18623 + ... + 25368.

It is an arithmetic number, because the mean of its divisors is an integer number (37107252).

Almost surely, 2^148381643 is an apocalyptic number.

148381643 is a deficient number, since it is larger than the sum of its proper divisors (47365).

148381643 is an equidigital number, since it uses as much as digits as its factorization.

148381643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47364.

The product of its digits is 55296, while the sum is 38.

The square root of 148381643 is about 12181.2003924080. The cubic root of 148381643 is about 529.4115255528.

The spelling of 148381643 in words is "one hundred forty-eight million, three hundred eighty-one thousand, six hundred forty-three".