1151646081 has 8 divisors (see below), whose sum is σ = 1571238240. Its totient is φ = 749908992.

The previous prime is 1151646073. The next prime is 1151646103. The reversal of 1151646081 is 1806461511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1151646081 - 2³ = 1151646073 is a prime.

It is a super-2 number, since 2×1151646081² = 2652577391765317122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1151646481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4463616 + ... + 4463873.

It is an arithmetic number, because the mean of its divisors is an integer number (196404780).

Almost surely, 2^1151646081 is an apocalyptic number.

It is an amenable number.

1151646081 is a deficient number, since it is larger than the sum of its proper divisors (419592159).

1151646081 is an equidigital number, since it uses as much as digits as its factorization.

1151646081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8927535.

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1151646081 is about 33935.9113771827. The cubic root of 1151646081 is about 1048.1891936586.

The spelling of 1151646081 in words is "one billion, one hundred fifty-one million, six hundred forty-six thousand, eighty-one".