1018120469 has 2 divisors, whose sum is σ = 1018120470. Its totient is φ = 1018120468.

The previous prime is 1018120451. The next prime is 1018120559. The reversal of 1018120469 is 9640218101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 819676900 + 198443569 = 28630^2 + 14087^2 .

It is a cyclic number.

It is not a de Polignac number, because 1018120469 - 2¹² = 1018116373 is a prime.

It is a super-2 number, since 2×1018120469² = 2073138578793559922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1018120669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509060234 + 509060235.

It is an arithmetic number, because the mean of its divisors is an integer number (509060235).

Almost surely, 2^1018120469 is an apocalyptic number.

It is an amenable number.

1018120469 is a deficient number, since it is larger than the sum of its proper divisors (1).

1018120469 is an equidigital number, since it uses as much as digits as its factorization.

1018120469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1018120469 is about 31908.0000783503. Note that the first 4 decimals coincide. The cubic root of 1018120469 is about 1006.0040357427.

The spelling of 1018120469 in words is "one billion, eighteen million, one hundred twenty thousand, four hundred sixty-nine".