148969815 has 8 divisors (see below), whose sum is σ = 238351728. Its totient is φ = 79450560.

The previous prime is 148969801. The next prime is 148969819. The reversal of 148969815 is 518969841.

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

It is not a de Polignac number, because 148969815 - 2⁵ = 148969783 is a prime.

It is a super-2 number, since 2×148969815² = 44384011562268450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148969819) 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, 4965646 + ... + 4965675.

It is an arithmetic number, because the mean of its divisors is an integer number (29793966).

Almost surely, 2^148969815 is an apocalyptic number.

148969815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

148969815 is a deficient number, since it is larger than the sum of its proper divisors (89381913).

148969815 is an equidigital number, since it uses as much as digits as its factorization.

148969815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9931329.

The product of its digits is 622080, while the sum is 51.

The square root of 148969815 is about 12205.3191273313. The cubic root of 148969815 is about 530.1101171457.

The spelling of 148969815 in words is "one hundred forty-eight million, nine hundred sixty-nine thousand, eight hundred fifteen".