149209613 has 8 divisors (see below), whose sum is σ = 174491328. Its totient is φ = 124919424.

The previous prime is 149209609. The next prime is 149209637. The reversal of 149209613 is 316902941.

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

It is not a de Polignac number, because 149209613 - 2² = 149209609 is a prime.

It is a super-2 number, since 2×149209613² = 44527017223219538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149209813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247556 + ... + 248157.

It is an arithmetic number, because the mean of its divisors is an integer number (21811416).

Almost surely, 2^149209613 is an apocalyptic number.

It is an amenable number.

149209613 is a deficient number, since it is larger than the sum of its proper divisors (25281715).

149209613 is an equidigital number, since it uses as much as digits as its factorization.

149209613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495763.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 149209613 is about 12215.1386811612. The cubic root of 149209613 is about 530.3944056069.

The spelling of 149209613 in words is "one hundred forty-nine million, two hundred nine thousand, six hundred thirteen".