149920951 has 2 divisors, whose sum is σ = 149920952. Its totient is φ = 149920950.

The previous prime is 149920949. The next prime is 149920993. The reversal of 149920951 is 159029941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149920951 - 2¹ = 149920949 is a prime.

Together with 149920949, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149920921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74960475 + 74960476.

It is an arithmetic number, because the mean of its divisors is an integer number (74960476).

Almost surely, 2^149920951 is an apocalyptic number.

149920951 is a deficient number, since it is larger than the sum of its proper divisors (1).

149920951 is an equidigital number, since it uses as much as digits as its factorization.

149920951 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 149920951 is about 12244.2211267193. The cubic root of 149920951 is about 531.2359325272.

The spelling of 149920951 in words is "one hundred forty-nine million, nine hundred twenty thousand, nine hundred fifty-one".