1012269081 has 16 divisors (see below), whose sum is σ = 1374744960. Its totient is φ = 662403840.

The previous prime is 1012269067. The next prime is 1012269103. The reversal of 1012269081 is 1809622101.

It is a happy number.

It is not a de Polignac number, because 1012269081 - 2¹¹ = 1012267033 is a prime.

It is a super-2 number, since 2×1012269081² = 2049377384697169122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012269781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38401 + ... + 59153.

It is an arithmetic number, because the mean of its divisors is an integer number (85921560).

Almost surely, 2^1012269081 is an apocalyptic number.

It is an amenable number.

1012269081 is a deficient number, since it is larger than the sum of its proper divisors (362475879).

1012269081 is a wasteful number, since it uses less digits than its factorization.

1012269081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21056.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 1012269081 is about 31816.1764044644. The cubic root of 1012269081 is about 1004.0730811525.

The spelling of 1012269081 in words is "one billion, twelve million, two hundred sixty-nine thousand, eighty-one".