149194295617 has 2 divisors, whose sum is σ = 149194295618. Its totient is φ = 149194295616.

The previous prime is 149194295581. The next prime is 149194295623. The reversal of 149194295617 is 716592491941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147529737216 + 1664558401 = 384096^2 + 40799^2 .

It is a cyclic number.

It is not a de Polignac number, because 149194295617 - 2¹⁵ = 149194262849 is a prime.

It is not a weakly prime, because it can be changed into another prime (149194295717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74597147808 + 74597147809.

It is an arithmetic number, because the mean of its divisors is an integer number (74597147809).

Almost surely, 2^149194295617 is an apocalyptic number.

It is an amenable number.

149194295617 is a deficient number, since it is larger than the sum of its proper divisors (1).

149194295617 is an equidigital number, since it uses as much as digits as its factorization.

149194295617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 58.

The spelling of 149194295617 in words is "one hundred forty-nine billion, one hundred ninety-four million, two hundred ninety-five thousand, six hundred seventeen".