149854643 has 8 divisors (see below), whose sum is σ = 158950512. Its totient is φ = 140790016.

The previous prime is 149854633. The next prime is 149854681. The reversal of 149854643 is 346458941.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149854643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149854594 and 149854603.

It is not an unprimeable number, because it can be changed into a prime (149854603) 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, 2471 + ... + 17487.

It is an arithmetic number, because the mean of its divisors is an integer number (19868814).

Almost surely, 2^149854643 is an apocalyptic number.

149854643 is a deficient number, since it is larger than the sum of its proper divisors (9095869).

149854643 is a wasteful number, since it uses less digits than its factorization.

149854643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15621.

The product of its digits is 414720, while the sum is 44.

The square root of 149854643 is about 12241.5131009202. The cubic root of 149854643 is about 531.1576014990.

The spelling of 149854643 in words is "one hundred forty-nine million, eight hundred fifty-four thousand, six hundred forty-three".