148838151981 has 8 divisors (see below), whose sum is σ = 198662666944. Its totient is φ = 99119535840.

The previous prime is 148838151947. The next prime is 148838151991. The reversal of 148838151981 is 189151838841.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 148838151981 - 2¹⁴ = 148838135597 is a prime.

It is a super-2 number, since 2×148838151981² (a number of 23 digits) 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 (148838151911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26471425 + ... + 26477046.

It is an arithmetic number, because the mean of its divisors is an integer number (24832833368).

Almost surely, 2^148838151981 is an apocalyptic number.

It is an amenable number.

148838151981 is a deficient number, since it is larger than the sum of its proper divisors (49824514963).

148838151981 is an equidigital number, since it uses as much as digits as its factorization.

148838151981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52949411.

The product of its digits is 2211840, while the sum is 57.

The spelling of 148838151981 in words is "one hundred forty-eight billion, eight hundred thirty-eight million, one hundred fifty-one thousand, nine hundred eighty-one".