149685331 has 2 divisors, whose sum is σ = 149685332. Its totient is φ = 149685330.

The previous prime is 149685307. The next prime is 149685343. The reversal of 149685331 is 133586941.

It is a strong prime.

It is an emirp because it is prime and its reverse (133586941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149685331 - 2¹⁵ = 149652563 is a prime.

It is a super-2 number, since 2×149685331² = 44811396633159122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149685031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74842665 + 74842666.

It is an arithmetic number, because the mean of its divisors is an integer number (74842666).

Almost surely, 2^149685331 is an apocalyptic number.

149685331 is a deficient number, since it is larger than the sum of its proper divisors (1).

149685331 is an equidigital number, since it uses as much as digits as its factorization.

149685331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 149685331 is about 12234.5956614839. The cubic root of 149685331 is about 530.9574848066.

The spelling of 149685331 in words is "one hundred forty-nine million, six hundred eighty-five thousand, three hundred thirty-one".