149814669491 has 2 divisors, whose sum is σ = 149814669492. Its totient is φ = 149814669490.

The previous prime is 149814669439. The next prime is 149814669517. The reversal of 149814669491 is 194966418941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149814669491 - 2²² = 149810475187 is a prime.

It is not a weakly prime, because it can be changed into another prime (149814669791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74907334745 + 74907334746.

It is an arithmetic number, because the mean of its divisors is an integer number (74907334746).

Almost surely, 2^149814669491 is an apocalyptic number.

149814669491 is a deficient number, since it is larger than the sum of its proper divisors (1).

149814669491 is an equidigital number, since it uses as much as digits as its factorization.

149814669491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13436928, while the sum is 62.

The spelling of 149814669491 in words is "one hundred forty-nine billion, eight hundred fourteen million, six hundred sixty-nine thousand, four hundred ninety-one".