149609643 has 8 divisors (see below), whose sum is σ = 199839888. Its totient is φ = 99559584.

The previous prime is 149609597. The next prime is 149609657. The reversal of 149609643 is 346906941.

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

It is not a de Polignac number, because 149609643 - 2¹⁶ = 149544107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149609595 and 149609604.

It is not an unprimeable number, because it can be changed into a prime (149601643) 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, 43096 + ... + 46437.

It is an arithmetic number, because the mean of its divisors is an integer number (24979986).

Almost surely, 2^149609643 is an apocalyptic number.

149609643 is a deficient number, since it is larger than the sum of its proper divisors (50230245).

149609643 is an equidigital number, since it uses as much as digits as its factorization.

149609643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90093.

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 149609643 is about 12231.5020745614. The cubic root of 149609643 is about 530.8679772927.

The spelling of 149609643 in words is "one hundred forty-nine million, six hundred nine thousand, six hundred forty-three".