245136149 has 2 divisors, whose sum is σ = 245136150. Its totient is φ = 245136148.

The previous prime is 245136121. The next prime is 245136167. The reversal of 245136149 is 941631542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153933649 + 91202500 = 12407^2 + 9550^2 .

It is a cyclic number.

It is not a de Polignac number, because 245136149 - 2⁸ = 245135893 is a prime.

It is a super-4 number, since 4×245136149⁴ (a number of 35 digits) contains 4444 as substring.

It is equal to p_13427693 and since 245136149 and 13427693 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245136179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122568074 + 122568075.

It is an arithmetic number, because the mean of its divisors is an integer number (122568075).

Almost surely, 2^245136149 is an apocalyptic number.

It is an amenable number.

245136149 is a deficient number, since it is larger than the sum of its proper divisors (1).

245136149 is an equidigital number, since it uses as much as digits as its factorization.

245136149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 245136149 is about 15656.8243587261. The cubic root of 245136149 is about 625.8483617441.

The spelling of 245136149 in words is "two hundred forty-five million, one hundred thirty-six thousand, one hundred forty-nine".