149169331 has 2 divisors, whose sum is σ = 149169332. Its totient is φ = 149169330.

The previous prime is 149169313. The next prime is 149169347. The reversal of 149169331 is 133961941.

Together with previous prime (149169313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149169331 - 2¹⁹ = 148645043 is a prime.

It is a super-2 number, since 2×149169331² = 44502978621975122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149269331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74584665 + 74584666.

It is an arithmetic number, because the mean of its divisors is an integer number (74584666).

Almost surely, 2^149169331 is an apocalyptic number.

149169331 is a deficient number, since it is larger than the sum of its proper divisors (1).

149169331 is an equidigital number, since it uses as much as digits as its factorization.

149169331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17496, while the sum is 37.

The square root of 149169331 is about 12213.4897142463. The cubic root of 149169331 is about 530.3466712598.

The spelling of 149169331 in words is "one hundred forty-nine million, one hundred sixty-nine thousand, three hundred thirty-one".