149851519 has 2 divisors, whose sum is σ = 149851520. Its totient is φ = 149851518.

The previous prime is 149851501. The next prime is 149851523. The reversal of 149851519 is 915158941.

It is a strong prime.

It is an emirp because it is prime and its reverse (915158941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149851519 - 2⁵ = 149851487 is a prime.

It is a super-2 number, since 2×149851519² = 44910955493214722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149851589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74925759 + 74925760.

It is an arithmetic number, because the mean of its divisors is an integer number (74925760).

Almost surely, 2^149851519 is an apocalyptic number.

149851519 is a deficient number, since it is larger than the sum of its proper divisors (1).

149851519 is an equidigital number, since it uses as much as digits as its factorization.

149851519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 43.

The square root of 149851519 is about 12241.3855016497. The cubic root of 149851519 is about 531.1539104825.

The spelling of 149851519 in words is "one hundred forty-nine million, eight hundred fifty-one thousand, five hundred nineteen".