149194856633 has 2 divisors, whose sum is σ = 149194856634. Its totient is φ = 149194856632.

The previous prime is 149194856563. The next prime is 149194856693. The reversal of 149194856633 is 336658491941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119386143529 + 29808713104 = 345523^2 + 172652^2 .

It is an emirp because it is prime and its reverse (336658491941) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149194856633 is a prime.

It is not a weakly prime, because it can be changed into another prime (149194856693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74597428316 + 74597428317.

It is an arithmetic number, because the mean of its divisors is an integer number (74597428317).

Almost surely, 2^149194856633 is an apocalyptic number.

It is an amenable number.

149194856633 is a deficient number, since it is larger than the sum of its proper divisors (1).

149194856633 is an equidigital number, since it uses as much as digits as its factorization.

149194856633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16796160, while the sum is 59.

The spelling of 149194856633 in words is "one hundred forty-nine billion, one hundred ninety-four million, eight hundred fifty-six thousand, six hundred thirty-three".