149491728979 has 2 divisors, whose sum is σ = 149491728980. Its totient is φ = 149491728978.

The previous prime is 149491728973. The next prime is 149491729001. The reversal of 149491728979 is 979827194941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149491728979 - 2⁹ = 149491728467 is a prime.

It is not a weakly prime, because it can be changed into another prime (149491728973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74745864489 + 74745864490.

It is an arithmetic number, because the mean of its divisors is an integer number (74745864490).

Almost surely, 2^149491728979 is an apocalyptic number.

149491728979 is a deficient number, since it is larger than the sum of its proper divisors (1).

149491728979 is an equidigital number, since it uses as much as digits as its factorization.

149491728979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82301184, while the sum is 70.

The spelling of 149491728979 in words is "one hundred forty-nine billion, four hundred ninety-one million, seven hundred twenty-eight thousand, nine hundred seventy-nine".