149611819 has 8 divisors (see below), whose sum is σ = 171073280. Its totient is φ = 128172456.

The previous prime is 149611811. The next prime is 149611823. The reversal of 149611819 is 918116941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149611819 - 2³ = 149611811 is a prime.

It is a super-2 number, since 2×149611819² = 44767392768977522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149611811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13252 + ... + 21790.

It is an arithmetic number, because the mean of its divisors is an integer number (21384160).

Almost surely, 2^149611819 is an apocalyptic number.

149611819 is a deficient number, since it is larger than the sum of its proper divisors (21461461).

149611819 is an equidigital number, since it uses as much as digits as its factorization.

149611819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11049.

The product of its digits is 15552, while the sum is 40.

The square root of 149611819 is about 12231.5910248831. The cubic root of 149611819 is about 530.8705510197.

The spelling of 149611819 in words is "one hundred forty-nine million, six hundred eleven thousand, eight hundred nineteen".