149920651 has 8 divisors (see below), whose sum is σ = 150822000. Its totient is φ = 149022720.

The previous prime is 149920627. The next prime is 149920657. The reversal of 149920651 is 156029941.

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 149920651 - 2⁹ = 149920139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149920651.

It is not an unprimeable number, because it can be changed into a prime (149920657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169731 + ... + 170611.

It is an arithmetic number, because the mean of its divisors is an integer number (18852750).

Almost surely, 2^149920651 is an apocalyptic number.

149920651 is a deficient number, since it is larger than the sum of its proper divisors (901349).

149920651 is an equidigital number, since it uses as much as digits as its factorization.

149920651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1709.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 149920651 is about 12244.2088760361. The cubic root of 149920651 is about 531.2355781829.

The spelling of 149920651 in words is "one hundred forty-nine million, nine hundred twenty thousand, six hundred fifty-one".