163154749 has 2 divisors, whose sum is σ = 163154750. Its totient is φ = 163154748.

The previous prime is 163154707. The next prime is 163154759. The reversal of 163154749 is 947451361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161671225 + 1483524 = 12715^2 + 1218^2 .

It is a cyclic number.

It is not a de Polignac number, because 163154749 - 2²¹ = 161057597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163154759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81577374 + 81577375.

It is an arithmetic number, because the mean of its divisors is an integer number (81577375).

Almost surely, 2^163154749 is an apocalyptic number.

It is an amenable number.

163154749 is a deficient number, since it is larger than the sum of its proper divisors (1).

163154749 is an equidigital number, since it uses as much as digits as its factorization.

163154749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 40.

The square root of 163154749 is about 12773.2043356395. The cubic root of 163154749 is about 546.4283705517.

The spelling of 163154749 in words is "one hundred sixty-three million, one hundred fifty-four thousand, seven hundred forty-nine".