1051818081 has 16 divisors (see below), whose sum is σ = 1468272960. Its totient is φ = 668870720.

The previous prime is 1051818077. The next prime is 1051818107. The reversal of 1051818081 is 1808181501.

It is a cyclic number.

It is not a de Polignac number, because 1051818081 - 2² = 1051818077 is a prime.

It is a super-2 number, since 2×1051818081² = 2212642551037045122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1051811081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65610 + ... + 80051.

It is an arithmetic number, because the mean of its divisors is an integer number (91767060).

Almost surely, 2^1051818081 is an apocalyptic number.

It is an amenable number.

1051818081 is a deficient number, since it is larger than the sum of its proper divisors (416454879).

1051818081 is a wasteful number, since it uses less digits than its factorization.

1051818081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145776.

The product of its (nonzero) digits is 2560, while the sum is 33.

The square root of 1051818081 is about 32431.7449576800. The cubic root of 1051818081 is about 1016.9826505879.

Adding to 1051818081 its reverse (1808181501), we get a palindrome (2859999582).

The spelling of 1051818081 in words is "one billion, fifty-one million, eight hundred eighteen thousand, eighty-one".