148377491 has 4 divisors (see below), whose sum is σ = 148409184. Its totient is φ = 148345800.

The previous prime is 148377487. The next prime is 148377503. The reversal of 148377491 is 194773841.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 148377491 - 2² = 148377487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148377451) 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 3 ways as a sum of consecutive naturals, for example, 7280 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (37102296).

Almost surely, 2^148377491 is an apocalyptic number.

148377491 is a deficient number, since it is larger than the sum of its proper divisors (31693).

148377491 is an equidigital number, since it uses as much as digits as its factorization.

148377491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31692.

The product of its digits is 169344, while the sum is 44.

The square root of 148377491 is about 12181.0299646623. The cubic root of 148377491 is about 529.4065875270.

The spelling of 148377491 in words is "one hundred forty-eight million, three hundred seventy-seven thousand, four hundred ninety-one".