149347519 has 4 divisors (see below), whose sum is σ = 149446600. Its totient is φ = 149248440.

The previous prime is 149347511. The next prime is 149347559. The reversal of 149347519 is 915743941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915743941 = 7 ⋅130820563.

It is a cyclic number.

It is not a de Polignac number, because 149347519 - 2³ = 149347511 is a prime.

It is a super-2 number, since 2×149347519² = 44609362862910722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149347511) 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, 47244 + ... + 50305.

It is an arithmetic number, because the mean of its divisors is an integer number (37361650).

Almost surely, 2^149347519 is an apocalyptic number.

149347519 is a deficient number, since it is larger than the sum of its proper divisors (99081).

149347519 is an equidigital number, since it uses as much as digits as its factorization.

149347519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99080.

The product of its digits is 136080, while the sum is 43.

The square root of 149347519 is about 12220.7822581044. The cubic root of 149347519 is about 530.5577598005.

The spelling of 149347519 in words is "one hundred forty-nine million, three hundred forty-seven thousand, five hundred nineteen".