1151039885 has 8 divisors (see below), whose sum is σ = 1381491960. Its totient is φ = 920669184.

The previous prime is 1151039881. The next prime is 1151039921. The reversal of 1151039885 is 5889301511.

It can be written as a sum of positive squares in 4 ways, for example, as 155700484 + 995339401 = 12478^2 + 31549^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1151039885 - 2² = 1151039881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151039881) 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, 17021 + ... + 50909.

It is an arithmetic number, because the mean of its divisors is an integer number (172686495).

Almost surely, 2^1151039885 is an apocalyptic number.

It is an amenable number.

1151039885 is a deficient number, since it is larger than the sum of its proper divisors (230452075).

1151039885 is an equidigital number, since it uses as much as digits as its factorization.

1151039885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40687.

The product of its (nonzero) digits is 43200, while the sum is 41.

The square root of 1151039885 is about 33926.9787190077. The cubic root of 1151039885 is about 1048.0052483688.

The spelling of 1151039885 in words is "one billion, one hundred fifty-one million, thirty-nine thousand, eight hundred eighty-five".