149253822469 has 2 divisors, whose sum is σ = 149253822470. Its totient is φ = 149253822468.

The previous prime is 149253822427. The next prime is 149253822541. The reversal of 149253822469 is 964228352941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 139529890369 + 9723932100 = 373537^2 + 98610^2 .

It is a cyclic number.

It is not a de Polignac number, because 149253822469 - 2¹¹ = 149253820421 is a prime.

It is a super-2 number, since 2×149253822469² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149253822169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74626911234 + 74626911235.

It is an arithmetic number, because the mean of its divisors is an integer number (74626911235).

Almost surely, 2^149253822469 is an apocalyptic number.

It is an amenable number.

149253822469 is a deficient number, since it is larger than the sum of its proper divisors (1).

149253822469 is an equidigital number, since it uses as much as digits as its factorization.

149253822469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 55.

The spelling of 149253822469 in words is "one hundred forty-nine billion, two hundred fifty-three million, eight hundred twenty-two thousand, four hundred sixty-nine".