149315283893 has 2 divisors, whose sum is σ = 149315283894. Its totient is φ = 149315283892.

The previous prime is 149315283853. The next prime is 149315283899. The reversal of 149315283893 is 398382513941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99801023569 + 49514260324 = 315913^2 + 222518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149315283893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149315283899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74657641946 + 74657641947.

It is an arithmetic number, because the mean of its divisors is an integer number (74657641947).

Almost surely, 2^149315283893 is an apocalyptic number.

It is an amenable number.

149315283893 is a deficient number, since it is larger than the sum of its proper divisors (1).

149315283893 is an equidigital number, since it uses as much as digits as its factorization.

149315283893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 56.

The spelling of 149315283893 in words is "one hundred forty-nine billion, three hundred fifteen million, two hundred eighty-three thousand, eight hundred ninety-three".