149658816 has 56 divisors (see below), whose sum is σ = 397418560. Its totient is φ = 49704192.

The previous prime is 149658811. The next prime is 149658823. The reversal of 149658816 is 618856941.

It is a super-2 number, since 2×149658816² = 44795522413043712, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (149658811) 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 7 ways as a sum of consecutive naturals, for example, 57675 + ... + 60213.

It is an arithmetic number, because the mean of its divisors is an integer number (7096760).

Almost surely, 2^149658816 is an apocalyptic number.

149658816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 149658816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198709280).

149658816 is an abundant number, since it is smaller than the sum of its proper divisors (247759744).

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

149658816 is a wasteful number, since it uses less digits than its factorization.

149658816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2861 (or 2851 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The square root of 149658816 is about 12233.5120059613. The cubic root of 149658816 is about 530.9261319925.

The spelling of 149658816 in words is "one hundred forty-nine million, six hundred fifty-eight thousand, eight hundred sixteen".