149981387429 has 2 divisors, whose sum is σ = 149981387430. Its totient is φ = 149981387428.

The previous prime is 149981387417. The next prime is 149981387443. The reversal of 149981387429 is 924783189941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144702638404 + 5278749025 = 380398^2 + 72655^2 .

It is a cyclic number.

It is not a de Polignac number, because 149981387429 - 2⁸ = 149981387173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149981387729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74990693714 + 74990693715.

It is an arithmetic number, because the mean of its divisors is an integer number (74990693715).

Almost surely, 2^149981387429 is an apocalyptic number.

It is an amenable number.

149981387429 is a deficient number, since it is larger than the sum of its proper divisors (1).

149981387429 is an equidigital number, since it uses as much as digits as its factorization.

149981387429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 65.

The spelling of 149981387429 in words is "one hundred forty-nine billion, nine hundred eighty-one million, three hundred eighty-seven thousand, four hundred twenty-nine".