149873519 has 2 divisors, whose sum is σ = 149873520. Its totient is φ = 149873518.

The previous prime is 149873489. The next prime is 149873527. The reversal of 149873519 is 915378941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149873519 - 2⁸ = 149873263 is a prime.

It is a super-2 number, since 2×149873519² = 44924143394886722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149873579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74936759 + 74936760.

It is an arithmetic number, because the mean of its divisors is an integer number (74936760).

Almost surely, 2^149873519 is an apocalyptic number.

149873519 is a deficient number, since it is larger than the sum of its proper divisors (1).

149873519 is an equidigital number, since it uses as much as digits as its factorization.

149873519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 47.

The square root of 149873519 is about 12242.2840597660. The cubic root of 149873519 is about 531.1799024651.

The spelling of 149873519 in words is "one hundred forty-nine million, eight hundred seventy-three thousand, five hundred nineteen".