163402541 has 2 divisors, whose sum is σ = 163402542. Its totient is φ = 163402540.

The previous prime is 163402531. The next prime is 163402549. The reversal of 163402541 is 145204361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157502500 + 5900041 = 12550^2 + 2429^2 .

It is a cyclic number.

It is not a de Polignac number, because 163402541 - 2²⁶ = 96293677 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163402541.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163402549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81701270 + 81701271.

It is an arithmetic number, because the mean of its divisors is an integer number (81701271).

Almost surely, 2^163402541 is an apocalyptic number.

It is an amenable number.

163402541 is a deficient number, since it is larger than the sum of its proper divisors (1).

163402541 is an equidigital number, since it uses as much as digits as its factorization.

163402541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 163402541 is about 12782.9003359957. The cubic root of 163402541 is about 546.7048607973.

It can be divided in two parts, 16340 and 2541, that added together give a palindrome (18881).

The spelling of 163402541 in words is "one hundred sixty-three million, four hundred two thousand, five hundred forty-one".