149661151 has 2 divisors, whose sum is σ = 149661152. Its totient is φ = 149661150.

The previous prime is 149661133. The next prime is 149661173. The reversal of 149661151 is 151166941.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149661151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149661101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74830575 + 74830576.

It is an arithmetic number, because the mean of its divisors is an integer number (74830576).

Almost surely, 2^149661151 is an apocalyptic number.

149661151 is a deficient number, since it is larger than the sum of its proper divisors (1).

149661151 is an equidigital number, since it uses as much as digits as its factorization.

149661151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 34.

The square root of 149661151 is about 12233.6074401625. The cubic root of 149661151 is about 530.9288931754.

The spelling of 149661151 in words is "one hundred forty-nine million, six hundred sixty-one thousand, one hundred fifty-one".