163490077 has 2 divisors, whose sum is σ = 163490078. Its totient is φ = 163490076.

The previous prime is 163490053. The next prime is 163490113. The reversal of 163490077 is 770094361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163481796 + 8281 = 12786^2 + 91^2 .

It is a cyclic number.

It is not a de Polignac number, because 163490077 - 2¹¹ = 163488029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163494077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81745038 + 81745039.

It is an arithmetic number, because the mean of its divisors is an integer number (81745039).

Almost surely, 2^163490077 is an apocalyptic number.

It is an amenable number.

163490077 is a deficient number, since it is larger than the sum of its proper divisors (1).

163490077 is an equidigital number, since it uses as much as digits as its factorization.

163490077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 163490077 is about 12786.3238266517. The cubic root of 163490077 is about 546.8024680382.

The spelling of 163490077 in words is "one hundred sixty-three million, four hundred ninety thousand, seventy-seven".