148578949 has 4 divisors (see below), whose sum is σ = 149028160. Its totient is φ = 148129740.

The previous prime is 148578923. The next prime is 148578959. The reversal of 148578949 is 949875841.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 148578949 - 2²⁵ = 115024517 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 148578949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148578959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224109 + ... + 224770.

It is an arithmetic number, because the mean of its divisors is an integer number (37257040).

Almost surely, 2^148578949 is an apocalyptic number.

It is an amenable number.

148578949 is a deficient number, since it is larger than the sum of its proper divisors (449211).

148578949 is an equidigital number, since it uses as much as digits as its factorization.

148578949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449210.

The product of its digits is 2903040, while the sum is 55.

The square root of 148578949 is about 12189.2964932354. The cubic root of 148578949 is about 529.6460779395.

The spelling of 148578949 in words is "one hundred forty-eight million, five hundred seventy-eight thousand, nine hundred forty-nine".