149065919 has 4 divisors (see below), whose sum is σ = 151592520. Its totient is φ = 146539320.

The previous prime is 149065853. The next prime is 149065997. The reversal of 149065919 is 919560941.

149065919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 149065919 - 2²⁴ = 132288703 is a prime.

It is a super-2 number, since 2×149065919² = 44441296414629122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149065919.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149064919) 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, 1263212 + ... + 1263329.

It is an arithmetic number, because the mean of its divisors is an integer number (37898130).

Almost surely, 2^149065919 is an apocalyptic number.

149065919 is a deficient number, since it is larger than the sum of its proper divisors (2526601).

149065919 is an equidigital number, since it uses as much as digits as its factorization.

149065919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526600.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 149065919 is about 12209.2554646055. The cubic root of 149065919 is about 530.2240882236.

The spelling of 149065919 in words is "one hundred forty-nine million, sixty-five thousand, nine hundred nineteen".