18030977 has 2 divisors, whose sum is σ = 18030978. Its totient is φ = 18030976.

The previous prime is 18030967. The next prime is 18031007. The reversal of 18030977 is 77903081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17272336 + 758641 = 4156^2 + 871^2 .

It is an emirp because it is prime and its reverse (77903081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18030977 - 2¹⁴ = 18014593 is a prime.

It is a super-2 number, since 2×18030977² = 650232263149058, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18030907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9015488 + 9015489.

It is an arithmetic number, because the mean of its divisors is an integer number (9015489).

Almost surely, 2^18030977 is an apocalyptic number.

It is an amenable number.

18030977 is a deficient number, since it is larger than the sum of its proper divisors (1).

18030977 is an equidigital number, since it uses as much as digits as its factorization.

18030977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 18030977 is about 4246.2897922775. The cubic root of 18030977 is about 262.2243916067.

The spelling of 18030977 in words is "eighteen million, thirty thousand, nine hundred seventy-seven".