149557219 has 16 divisors (see below), whose sum is σ = 177381568. Its totient is φ = 123420672.

The previous prime is 149557207. The next prime is 149557229. The reversal of 149557219 is 912755941.

It is a cyclic number.

It is not a de Polignac number, because 149557219 - 2²³ = 141168611 is a prime.

It is a super-2 number, since 2×149557219² = 44734723510027922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149557229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22147 + ... + 28099.

It is an arithmetic number, because the mean of its divisors is an integer number (11086348).

Almost surely, 2^149557219 is an apocalyptic number.

149557219 is a deficient number, since it is larger than the sum of its proper divisors (27824349).

149557219 is an equidigital number, since it uses as much as digits as its factorization.

149557219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6094.

The product of its digits is 113400, while the sum is 43.

The square root of 149557219 is about 12229.3588957067. The cubic root of 149557219 is about 530.8059637453.

The spelling of 149557219 in words is "one hundred forty-nine million, five hundred fifty-seven thousand, two hundred nineteen".