149633643 has 8 divisors (see below), whose sum is σ = 211247568. Its totient is φ = 93887744.

The previous prime is 149633623. The next prime is 149633647. The reversal of 149633643 is 346336941.

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

It is a cyclic number.

It is not a de Polignac number, because 149633643 - 2⁵ = 149633611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149633647) 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, 1466946 + ... + 1467047.

It is an arithmetic number, because the mean of its divisors is an integer number (26405946).

Almost surely, 2^149633643 is an apocalyptic number.

149633643 is a deficient number, since it is larger than the sum of its proper divisors (61613925).

149633643 is a wasteful number, since it uses less digits than its factorization.

149633643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2934013.

The product of its digits is 139968, while the sum is 39.

The square root of 149633643 is about 12232.4831085107. The cubic root of 149633643 is about 530.8963626071.

The spelling of 149633643 in words is "one hundred forty-nine million, six hundred thirty-three thousand, six hundred forty-three".