149691742229 has 2 divisors, whose sum is σ = 149691742230. Its totient is φ = 149691742228.

The previous prime is 149691742199. The next prime is 149691742241. The reversal of 149691742229 is 922247196941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101598375025 + 48093367204 = 318745^2 + 219302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149691742229 is a prime.

It is a super-4 number, since 4×149691742229⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149691742259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74845871114 + 74845871115.

It is an arithmetic number, because the mean of its divisors is an integer number (74845871115).

Almost surely, 2^149691742229 is an apocalyptic number.

It is an amenable number.

149691742229 is a deficient number, since it is larger than the sum of its proper divisors (1).

149691742229 is an equidigital number, since it uses as much as digits as its factorization.

149691742229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The spelling of 149691742229 in words is "one hundred forty-nine billion, six hundred ninety-one million, seven hundred forty-two thousand, two hundred twenty-nine".