148821816 has 128 divisors (see below), whose sum is σ = 442391040. Its totient is φ = 41126400.

The previous prime is 148821811. The next prime is 148821821. The reversal of 148821816 is 618128841.

It is an interprime number because it is at equal distance from previous prime (148821811) and next prime (148821821).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148821811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353286 + ... + 353706.

It is an arithmetic number, because the mean of its divisors is an integer number (3456180).

Almost surely, 2^148821816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 148821816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (221195520).

148821816 is an abundant number, since it is smaller than the sum of its proper divisors (293569224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

148821816 is a wasteful number, since it uses less digits than its factorization.

148821816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557 (or 553 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The square root of 148821816 is about 12199.2547313350. The cubic root of 148821816 is about 529.9345071559.

The spelling of 148821816 in words is "one hundred forty-eight million, eight hundred twenty-one thousand, eight hundred sixteen".