1011681215 has 4 divisors (see below), whose sum is σ = 1214017464. Its totient is φ = 809344968.

The previous prime is 1011681199. The next prime is 1011681221. The reversal of 1011681215 is 5121861101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1011681215 - 2⁴ = 1011681199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101168117 + ... + 101168126.

It is an arithmetic number, because the mean of its divisors is an integer number (303504366).

Almost surely, 2^1011681215 is an apocalyptic number.

1011681215 is a deficient number, since it is larger than the sum of its proper divisors (202336249).

1011681215 is an equidigital number, since it uses as much as digits as its factorization.

1011681215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202336248.

The product of its (nonzero) digits is 480, while the sum is 26.

The square root of 1011681215 is about 31806.9365862228. The cubic root of 1011681215 is about 1003.8786747650.

The spelling of 1011681215 in words is "one billion, eleven million, six hundred eighty-one thousand, two hundred fifteen".