149046643 has 4 divisors (see below), whose sum is σ = 152512888. Its totient is φ = 145580400.

The previous prime is 149046629. The next prime is 149046649. The reversal of 149046643 is 346640941.

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 149046643 - 2²⁵ = 115492211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149046649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1733058 + ... + 1733143.

It is an arithmetic number, because the mean of its divisors is an integer number (38128222).

Almost surely, 2^149046643 is an apocalyptic number.

149046643 is a deficient number, since it is larger than the sum of its proper divisors (3466245).

149046643 is an equidigital number, since it uses as much as digits as its factorization.

149046643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466244.

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 149046643 is about 12208.4660379591. The cubic root of 149046643 is about 530.2012324737.

The spelling of 149046643 in words is "one hundred forty-nine million, forty-six thousand, six hundred forty-three".