149469891601 has 2 divisors, whose sum is σ = 149469891602. Its totient is φ = 149469891600.

The previous prime is 149469891569. The next prime is 149469891629. The reversal of 149469891601 is 106198964941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149363698576 + 106193025 = 386476^2 + 10305^2 .

It is a cyclic number.

It is not a de Polignac number, because 149469891601 - 2⁵ = 149469891569 is a prime.

It is not a weakly prime, because it can be changed into another prime (149469891631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74734945800 + 74734945801.

It is an arithmetic number, because the mean of its divisors is an integer number (74734945801).

Almost surely, 2^149469891601 is an apocalyptic number.

It is an amenable number.

149469891601 is a deficient number, since it is larger than the sum of its proper divisors (1).

149469891601 is an equidigital number, since it uses as much as digits as its factorization.

149469891601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3359232, while the sum is 58.

The spelling of 149469891601 in words is "one hundred forty-nine billion, four hundred sixty-nine million, eight hundred ninety-one thousand, six hundred one".