149136919 has 2 divisors, whose sum is σ = 149136920. Its totient is φ = 149136918.

The previous prime is 149136901. The next prime is 149136959. The reversal of 149136919 is 919631941.

149136919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (919631941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149136919 - 2¹¹ = 149134871 is a prime.

It is a super-2 number, since 2×149136919² = 44483641217625122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149136959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74568459 + 74568460.

It is an arithmetic number, because the mean of its divisors is an integer number (74568460).

Almost surely, 2^149136919 is an apocalyptic number.

149136919 is a deficient number, since it is larger than the sum of its proper divisors (1).

149136919 is an equidigital number, since it uses as much as digits as its factorization.

149136919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 43.

The square root of 149136919 is about 12212.1627486699. The cubic root of 149136919 is about 530.3082566577.

The spelling of 149136919 in words is "one hundred forty-nine million, one hundred thirty-six thousand, nine hundred nineteen".