149667851 has 2 divisors, whose sum is σ = 149667852. Its totient is φ = 149667850.

The previous prime is 149667827. The next prime is 149667853. The reversal of 149667851 is 158766941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149667851 is a prime.

It is a Sophie Germain prime.

Together with 149667853, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149667796 and 149667805.

It is not a weakly prime, because it can be changed into another prime (149667853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74833925 + 74833926.

It is an arithmetic number, because the mean of its divisors is an integer number (74833926).

Almost surely, 2^149667851 is an apocalyptic number.

149667851 is a deficient number, since it is larger than the sum of its proper divisors (1).

149667851 is an equidigital number, since it uses as much as digits as its factorization.

149667851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 149667851 is about 12233.8812729240. The cubic root of 149667851 is about 530.9368158961.

The spelling of 149667851 in words is "one hundred forty-nine million, six hundred sixty-seven thousand, eight hundred fifty-one".