148970881 has 8 divisors (see below), whose sum is σ = 159895944. Its totient is φ = 138286080.

The previous prime is 148970879. The next prime is 148970909. The reversal of 148970881 is 188079841.

It can be written as a sum of positive squares in 4 ways, for example, as 8761600 + 140209281 = 2960^2 + 11841^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 148970881 - 2¹ = 148970879 is a prime.

It is a super-2 number, since 2×148970881² = 44384646771832322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148970831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58780 + ... + 61261.

It is an arithmetic number, because the mean of its divisors is an integer number (19986993).

Almost surely, 2^148970881 is an apocalyptic number.

It is an amenable number.

148970881 is a deficient number, since it is larger than the sum of its proper divisors (10925063).

148970881 is a wasteful number, since it uses less digits than its factorization.

148970881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120131.

The product of its (nonzero) digits is 129024, while the sum is 46.

The square root of 148970881 is about 12205.3627967382. The cubic root of 148970881 is about 530.1113815988. Note that the first 3 decimals are identical.

The spelling of 148970881 in words is "one hundred forty-eight million, nine hundred seventy thousand, eight hundred eighty-one".