1011405268 has 6 divisors (see below), whose sum is σ = 1769959226. Its totient is φ = 505702632.

The previous prime is 1011405217. The next prime is 1011405313. The reversal of 1011405268 is 8625041101.

It can be written as a sum of positive squares in only one way, i.e., 982697104 + 28708164 = 31348^2 + 5358^2 .

It is a super-2 number, since 2×1011405268² = 2045881232276303648, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126425655 + ... + 126425662.

Almost surely, 2^1011405268 is an apocalyptic number.

It is an amenable number.

1011405268 is a deficient number, since it is larger than the sum of its proper divisors (758553958).

1011405268 is a wasteful number, since it uses less digits than its factorization.

1011405268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252851321 (or 252851319 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 1011405268 is about 31802.5984472967. The cubic root of 1011405268 is about 1003.7873935409.

Adding to 1011405268 its reverse (8625041101), we get a palindrome (9636446369).

The spelling of 1011405268 in words is "one billion, eleven million, four hundred five thousand, two hundred sixty-eight".